KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
/*
|
2012-07-20 03:15:04 -06:00
|
|
|
* handling kvm guest interrupts
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
*
|
2013-07-15 05:36:01 -06:00
|
|
|
* Copyright IBM Corp. 2008,2014
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or modify
|
|
|
|
* it under the terms of the GNU General Public License (version 2 only)
|
|
|
|
* as published by the Free Software Foundation.
|
|
|
|
*
|
|
|
|
* Author(s): Carsten Otte <cotte@de.ibm.com>
|
|
|
|
*/
|
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
#include <linux/interrupt.h>
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
#include <linux/kvm_host.h>
|
2010-02-26 14:37:43 -07:00
|
|
|
#include <linux/hrtimer.h>
|
2013-07-15 05:36:01 -06:00
|
|
|
#include <linux/mmu_context.h>
|
2008-07-25 07:51:54 -06:00
|
|
|
#include <linux/signal.h>
|
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 02:04:11 -06:00
|
|
|
#include <linux/slab.h>
|
2010-02-26 14:37:43 -07:00
|
|
|
#include <asm/asm-offsets.h>
|
|
|
|
#include <asm/uaccess.h>
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
#include "kvm-s390.h"
|
|
|
|
#include "gaccess.h"
|
2012-07-23 09:20:30 -06:00
|
|
|
#include "trace-s390.h"
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2012-12-20 07:32:08 -07:00
|
|
|
#define IOINT_SCHID_MASK 0x0000ffff
|
|
|
|
#define IOINT_SSID_MASK 0x00030000
|
|
|
|
#define IOINT_CSSID_MASK 0x03fc0000
|
|
|
|
#define IOINT_AI_MASK 0x04000000
|
|
|
|
|
|
|
|
static int is_ioint(u64 type)
|
|
|
|
{
|
|
|
|
return ((type & 0xfffe0000u) != 0xfffe0000u);
|
|
|
|
}
|
|
|
|
|
2013-10-07 09:11:48 -06:00
|
|
|
int psw_extint_disabled(struct kvm_vcpu *vcpu)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
|
|
|
return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_EXT);
|
|
|
|
}
|
|
|
|
|
2012-12-20 07:32:08 -07:00
|
|
|
static int psw_ioint_disabled(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_IO);
|
|
|
|
}
|
|
|
|
|
2012-12-20 07:32:09 -07:00
|
|
|
static int psw_mchk_disabled(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
return !(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_MCHECK);
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
static int psw_interrupts_disabled(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
if ((vcpu->arch.sie_block->gpsw.mask & PSW_MASK_PER) ||
|
|
|
|
(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_IO) ||
|
|
|
|
(vcpu->arch.sie_block->gpsw.mask & PSW_MASK_EXT))
|
|
|
|
return 0;
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2014-03-18 03:03:26 -06:00
|
|
|
static int ckc_interrupts_enabled(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
if (psw_extint_disabled(vcpu) ||
|
|
|
|
!(vcpu->arch.sie_block->gcr[0] & 0x800ul))
|
|
|
|
return 0;
|
2014-03-18 03:06:14 -06:00
|
|
|
if (guestdbg_enabled(vcpu) && guestdbg_sstep_enabled(vcpu))
|
|
|
|
/* No timer interrupts when single stepping */
|
|
|
|
return 0;
|
2014-03-18 03:03:26 -06:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
2013-02-07 05:20:52 -07:00
|
|
|
static u64 int_word_to_isc_bits(u32 int_word)
|
|
|
|
{
|
|
|
|
u8 isc = (int_word & 0x38000000) >> 27;
|
|
|
|
|
|
|
|
return (0x80 >> isc) << 24;
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
static int __interrupt_is_deliverable(struct kvm_vcpu *vcpu,
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_interrupt_info *inti)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
|
|
|
switch (inti->type) {
|
2011-10-18 04:27:15 -06:00
|
|
|
case KVM_S390_INT_EXTERNAL_CALL:
|
|
|
|
if (psw_extint_disabled(vcpu))
|
|
|
|
return 0;
|
|
|
|
if (vcpu->arch.sie_block->gcr[0] & 0x2000ul)
|
|
|
|
return 1;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_EMERGENCY:
|
|
|
|
if (psw_extint_disabled(vcpu))
|
|
|
|
return 0;
|
|
|
|
if (vcpu->arch.sie_block->gcr[0] & 0x4000ul)
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
case KVM_S390_INT_SERVICE:
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
|
|
|
if (psw_extint_disabled(vcpu))
|
|
|
|
return 0;
|
|
|
|
if (vcpu->arch.sie_block->gcr[0] & 0x200ul)
|
|
|
|
return 1;
|
|
|
|
return 0;
|
|
|
|
case KVM_S390_PROGRAM_INT:
|
|
|
|
case KVM_S390_SIGP_STOP:
|
|
|
|
case KVM_S390_SIGP_SET_PREFIX:
|
|
|
|
case KVM_S390_RESTART:
|
|
|
|
return 1;
|
2012-12-20 07:32:09 -07:00
|
|
|
case KVM_S390_MCHK:
|
|
|
|
if (psw_mchk_disabled(vcpu))
|
|
|
|
return 0;
|
|
|
|
if (vcpu->arch.sie_block->gcr[14] & inti->mchk.cr14)
|
|
|
|
return 1;
|
|
|
|
return 0;
|
2012-12-20 07:32:08 -07:00
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
|
|
|
if (psw_ioint_disabled(vcpu))
|
|
|
|
return 0;
|
2013-02-07 05:20:52 -07:00
|
|
|
if (vcpu->arch.sie_block->gcr[6] &
|
|
|
|
int_word_to_isc_bits(inti->io.io_int_word))
|
2012-12-20 07:32:08 -07:00
|
|
|
return 1;
|
|
|
|
return 0;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
default:
|
2012-12-20 07:32:08 -07:00
|
|
|
printk(KERN_WARNING "illegal interrupt type %llx\n",
|
|
|
|
inti->type);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __set_cpu_idle(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
atomic_set_mask(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags);
|
|
|
|
set_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __unset_cpu_idle(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
atomic_clear_mask(CPUSTAT_WAIT, &vcpu->arch.sie_block->cpuflags);
|
|
|
|
clear_bit(vcpu->vcpu_id, vcpu->arch.local_int.float_int->idle_mask);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __reset_intercept_indicators(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
atomic_clear_mask(CPUSTAT_ECALL_PEND |
|
|
|
|
CPUSTAT_IO_INT | CPUSTAT_EXT_INT | CPUSTAT_STOP_INT,
|
|
|
|
&vcpu->arch.sie_block->cpuflags);
|
|
|
|
vcpu->arch.sie_block->lctl = 0x0000;
|
2014-01-23 04:26:52 -07:00
|
|
|
vcpu->arch.sie_block->ictl &= ~(ICTL_LPSW | ICTL_STCTL | ICTL_PINT);
|
|
|
|
|
|
|
|
if (guestdbg_enabled(vcpu)) {
|
|
|
|
vcpu->arch.sie_block->lctl |= (LCTL_CR0 | LCTL_CR9 |
|
|
|
|
LCTL_CR10 | LCTL_CR11);
|
|
|
|
vcpu->arch.sie_block->ictl |= (ICTL_STCTL | ICTL_PINT);
|
|
|
|
}
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
static void __set_cpuflag(struct kvm_vcpu *vcpu, u32 flag)
|
|
|
|
{
|
|
|
|
atomic_set_mask(flag, &vcpu->arch.sie_block->cpuflags);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __set_intercept_indicator(struct kvm_vcpu *vcpu,
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_interrupt_info *inti)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
|
|
|
switch (inti->type) {
|
2011-10-18 04:27:15 -06:00
|
|
|
case KVM_S390_INT_EXTERNAL_CALL:
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_EMERGENCY:
|
|
|
|
case KVM_S390_INT_SERVICE:
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
|
|
|
if (psw_extint_disabled(vcpu))
|
|
|
|
__set_cpuflag(vcpu, CPUSTAT_EXT_INT);
|
|
|
|
else
|
|
|
|
vcpu->arch.sie_block->lctl |= LCTL_CR0;
|
|
|
|
break;
|
|
|
|
case KVM_S390_SIGP_STOP:
|
|
|
|
__set_cpuflag(vcpu, CPUSTAT_STOP_INT);
|
|
|
|
break;
|
2012-12-20 07:32:09 -07:00
|
|
|
case KVM_S390_MCHK:
|
|
|
|
if (psw_mchk_disabled(vcpu))
|
|
|
|
vcpu->arch.sie_block->ictl |= ICTL_LPSW;
|
|
|
|
else
|
|
|
|
vcpu->arch.sie_block->lctl |= LCTL_CR14;
|
|
|
|
break;
|
2012-12-20 07:32:08 -07:00
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
|
|
|
if (psw_ioint_disabled(vcpu))
|
|
|
|
__set_cpuflag(vcpu, CPUSTAT_IO_INT);
|
|
|
|
else
|
|
|
|
vcpu->arch.sie_block->lctl |= LCTL_CR6;
|
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-03-03 02:55:13 -07:00
|
|
|
static int __deliver_prog_irq(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_s390_pgm_info *pgm_info)
|
|
|
|
{
|
|
|
|
const unsigned short table[] = { 2, 4, 4, 6 };
|
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
switch (pgm_info->code & ~PGM_PER) {
|
|
|
|
case PGM_AFX_TRANSLATION:
|
|
|
|
case PGM_ASX_TRANSLATION:
|
|
|
|
case PGM_EX_TRANSLATION:
|
|
|
|
case PGM_LFX_TRANSLATION:
|
|
|
|
case PGM_LSTE_SEQUENCE:
|
|
|
|
case PGM_LSX_TRANSLATION:
|
|
|
|
case PGM_LX_TRANSLATION:
|
|
|
|
case PGM_PRIMARY_AUTHORITY:
|
|
|
|
case PGM_SECONDARY_AUTHORITY:
|
|
|
|
case PGM_SPACE_SWITCH:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->trans_exc_code,
|
|
|
|
(u64 *)__LC_TRANS_EXC_CODE);
|
|
|
|
break;
|
|
|
|
case PGM_ALEN_TRANSLATION:
|
|
|
|
case PGM_ALE_SEQUENCE:
|
|
|
|
case PGM_ASTE_INSTANCE:
|
|
|
|
case PGM_ASTE_SEQUENCE:
|
|
|
|
case PGM_ASTE_VALIDITY:
|
|
|
|
case PGM_EXTENDED_AUTHORITY:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->exc_access_id,
|
|
|
|
(u8 *)__LC_EXC_ACCESS_ID);
|
|
|
|
break;
|
|
|
|
case PGM_ASCE_TYPE:
|
|
|
|
case PGM_PAGE_TRANSLATION:
|
|
|
|
case PGM_REGION_FIRST_TRANS:
|
|
|
|
case PGM_REGION_SECOND_TRANS:
|
|
|
|
case PGM_REGION_THIRD_TRANS:
|
|
|
|
case PGM_SEGMENT_TRANSLATION:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->trans_exc_code,
|
|
|
|
(u64 *)__LC_TRANS_EXC_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->exc_access_id,
|
|
|
|
(u8 *)__LC_EXC_ACCESS_ID);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->op_access_id,
|
|
|
|
(u8 *)__LC_OP_ACCESS_ID);
|
|
|
|
break;
|
|
|
|
case PGM_MONITOR:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->mon_class_nr,
|
|
|
|
(u64 *)__LC_MON_CLASS_NR);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->mon_code,
|
|
|
|
(u64 *)__LC_MON_CODE);
|
|
|
|
break;
|
|
|
|
case PGM_DATA:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->data_exc_code,
|
|
|
|
(u32 *)__LC_DATA_EXC_CODE);
|
|
|
|
break;
|
|
|
|
case PGM_PROTECTION:
|
|
|
|
rc = put_guest_lc(vcpu, pgm_info->trans_exc_code,
|
|
|
|
(u64 *)__LC_TRANS_EXC_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->exc_access_id,
|
|
|
|
(u8 *)__LC_EXC_ACCESS_ID);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (pgm_info->code & PGM_PER) {
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->per_code,
|
|
|
|
(u8 *) __LC_PER_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->per_atmid,
|
|
|
|
(u8 *)__LC_PER_ATMID);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->per_address,
|
|
|
|
(u64 *) __LC_PER_ADDRESS);
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->per_access_id,
|
|
|
|
(u8 *) __LC_PER_ACCESS_ID);
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (vcpu->arch.sie_block->icptcode) {
|
|
|
|
case ICPT_INST:
|
|
|
|
case ICPT_INSTPROGI:
|
|
|
|
case ICPT_OPEREXC:
|
|
|
|
case ICPT_PARTEXEC:
|
|
|
|
case ICPT_IOINST:
|
|
|
|
/* last instruction only stored for these icptcodes */
|
|
|
|
rc |= put_guest_lc(vcpu, table[vcpu->arch.sie_block->ipa >> 14],
|
|
|
|
(u16 *) __LC_PGM_ILC);
|
|
|
|
break;
|
|
|
|
case ICPT_PROGI:
|
|
|
|
rc |= put_guest_lc(vcpu, vcpu->arch.sie_block->pgmilc,
|
|
|
|
(u16 *) __LC_PGM_ILC);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
rc |= put_guest_lc(vcpu, 0,
|
|
|
|
(u16 *) __LC_PGM_ILC);
|
|
|
|
}
|
|
|
|
|
|
|
|
rc |= put_guest_lc(vcpu, pgm_info->code,
|
|
|
|
(u16 *)__LC_PGM_INT_CODE);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_PGM_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_PGM_NEW_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
static void __do_deliver_interrupt(struct kvm_vcpu *vcpu,
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_interrupt_info *inti)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
|
|
|
const unsigned short table[] = { 2, 4, 4, 6 };
|
2013-03-05 05:14:43 -07:00
|
|
|
int rc = 0;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
switch (inti->type) {
|
|
|
|
case KVM_S390_INT_EMERGENCY:
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp emerg");
|
|
|
|
vcpu->stat.deliver_emergency_signal++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->emerg.code, 0);
|
2014-02-12 06:05:38 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x1201, (u16 *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->emerg.code,
|
|
|
|
(u16 *)__LC_EXT_CPU_ADDR);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
2013-03-05 05:14:43 -07:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
2011-10-18 04:27:15 -06:00
|
|
|
case KVM_S390_INT_EXTERNAL_CALL:
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "interrupt: sigp ext call");
|
|
|
|
vcpu->stat.deliver_external_call++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->extcall.code, 0);
|
2014-02-12 06:05:38 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x1202, (u16 *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->extcall.code,
|
|
|
|
(u16 *)__LC_EXT_CPU_ADDR);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
2011-10-18 04:27:15 -06:00
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_SERVICE:
|
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: sclp parm:%x",
|
|
|
|
inti->ext.ext_params);
|
|
|
|
vcpu->stat.deliver_service_signal++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->ext.ext_params, 0);
|
2014-01-02 02:59:41 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x2401, (u16 *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
2013-03-05 05:14:43 -07:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
2014-01-02 02:59:41 -07:00
|
|
|
rc |= put_guest_lc(vcpu, inti->ext.ext_params,
|
|
|
|
(u32 *)__LC_EXT_PARAMS);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type, 0,
|
|
|
|
inti->ext.ext_params2);
|
2014-02-12 06:05:38 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x2603, (u16 *) __LC_EXT_INT_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, 0x0600, (u16 *) __LC_EXT_CPU_ADDR);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
2013-10-07 09:11:48 -06:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
2014-02-12 06:05:38 -07:00
|
|
|
rc |= put_guest_lc(vcpu, inti->ext.ext_params2,
|
|
|
|
(u64 *) __LC_EXT_PARAMS2);
|
2013-10-07 09:11:48 -06:00
|
|
|
break;
|
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type, 0,
|
|
|
|
inti->ext.ext_params2);
|
2014-01-02 02:59:41 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x2603, (u16 *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, 0x0680, (u16 *)__LC_EXT_CPU_ADDR);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
2013-10-07 09:11:48 -06:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
2014-01-02 02:59:41 -07:00
|
|
|
rc |= put_guest_lc(vcpu, inti->ext.ext_params2,
|
|
|
|
(u64 *)__LC_EXT_PARAMS2);
|
2013-10-07 09:11:48 -06:00
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
2009-01-09 04:14:56 -07:00
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: virtio parm:%x,parm64:%llx",
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
inti->ext.ext_params, inti->ext.ext_params2);
|
|
|
|
vcpu->stat.deliver_virtio_interrupt++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->ext.ext_params,
|
|
|
|
inti->ext.ext_params2);
|
2014-01-02 02:59:41 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x2603, (u16 *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= put_guest_lc(vcpu, 0x0d00, (u16 *)__LC_EXT_CPU_ADDR);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
2013-03-05 05:14:43 -07:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
2014-01-02 02:59:41 -07:00
|
|
|
rc |= put_guest_lc(vcpu, inti->ext.ext_params,
|
|
|
|
(u32 *)__LC_EXT_PARAMS);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->ext.ext_params2,
|
|
|
|
(u64 *)__LC_EXT_PARAMS2);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
|
|
|
case KVM_S390_SIGP_STOP:
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu stop");
|
|
|
|
vcpu->stat.deliver_stop_signal++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
0, 0);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
__set_intercept_indicator(vcpu, inti);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case KVM_S390_SIGP_SET_PREFIX:
|
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: set prefix to %x",
|
|
|
|
inti->prefix.address);
|
|
|
|
vcpu->stat.deliver_prefix_signal++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->prefix.address, 0);
|
2012-01-11 03:19:32 -07:00
|
|
|
kvm_s390_set_prefix(vcpu, inti->prefix.address);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
|
|
|
|
|
|
|
case KVM_S390_RESTART:
|
|
|
|
VCPU_EVENT(vcpu, 4, "%s", "interrupt: cpu restart");
|
|
|
|
vcpu->stat.deliver_restart_signal++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
0, 0);
|
2014-02-12 06:05:38 -07:00
|
|
|
rc = write_guest_lc(vcpu,
|
|
|
|
offsetof(struct _lowcore, restart_old_psw),
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, offsetof(struct _lowcore, restart_psw),
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
2014-03-14 03:59:29 -06:00
|
|
|
kvm_s390_vcpu_start(vcpu);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
|
|
|
case KVM_S390_PROGRAM_INT:
|
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: pgm check code:%x, ilc:%x",
|
|
|
|
inti->pgm.code,
|
|
|
|
table[vcpu->arch.sie_block->ipa >> 14]);
|
|
|
|
vcpu->stat.deliver_program_int++;
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->pgm.code, 0);
|
2014-03-03 02:55:13 -07:00
|
|
|
rc = __deliver_prog_irq(vcpu, &inti->pgm);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
|
|
|
|
2012-12-20 07:32:09 -07:00
|
|
|
case KVM_S390_MCHK:
|
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: machine check mcic=%llx",
|
|
|
|
inti->mchk.mcic);
|
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
inti->mchk.cr14,
|
|
|
|
inti->mchk.mcic);
|
2013-03-05 05:14:43 -07:00
|
|
|
rc = kvm_s390_vcpu_store_status(vcpu,
|
|
|
|
KVM_S390_STORE_STATUS_PREFIXED);
|
2014-01-02 02:59:41 -07:00
|
|
|
rc |= put_guest_lc(vcpu, inti->mchk.mcic, (u64 *)__LC_MCCK_CODE);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_MCK_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_MCK_NEW_PSW,
|
2013-03-05 05:14:43 -07:00
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
2012-12-20 07:32:09 -07:00
|
|
|
break;
|
|
|
|
|
2012-12-20 07:32:08 -07:00
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
|
|
|
{
|
|
|
|
__u32 param0 = ((__u32)inti->io.subchannel_id << 16) |
|
|
|
|
inti->io.subchannel_nr;
|
|
|
|
__u64 param1 = ((__u64)inti->io.io_int_parm << 32) |
|
|
|
|
inti->io.io_int_word;
|
|
|
|
VCPU_EVENT(vcpu, 4, "interrupt: I/O %llx", inti->type);
|
|
|
|
vcpu->stat.deliver_io_int++;
|
|
|
|
trace_kvm_s390_deliver_interrupt(vcpu->vcpu_id, inti->type,
|
|
|
|
param0, param1);
|
2014-01-02 02:59:41 -07:00
|
|
|
rc = put_guest_lc(vcpu, inti->io.subchannel_id,
|
|
|
|
(u16 *)__LC_SUBCHANNEL_ID);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->io.subchannel_nr,
|
|
|
|
(u16 *)__LC_SUBCHANNEL_NR);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->io.io_int_parm,
|
|
|
|
(u32 *)__LC_IO_INT_PARM);
|
|
|
|
rc |= put_guest_lc(vcpu, inti->io.io_int_word,
|
|
|
|
(u32 *)__LC_IO_INT_WORD);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_IO_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_IO_NEW_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
2012-12-20 07:32:08 -07:00
|
|
|
break;
|
|
|
|
}
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
default:
|
|
|
|
BUG();
|
|
|
|
}
|
2013-03-05 05:14:43 -07:00
|
|
|
if (rc) {
|
2008-07-25 07:51:54 -06:00
|
|
|
printk("kvm: The guest lowcore is not mapped during interrupt "
|
2013-03-05 05:14:43 -07:00
|
|
|
"delivery, killing userspace\n");
|
2008-07-25 07:51:54 -06:00
|
|
|
do_exit(SIGKILL);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2014-03-18 03:03:26 -06:00
|
|
|
static void deliver_ckc_interrupt(struct kvm_vcpu *vcpu)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
2013-03-05 05:14:43 -07:00
|
|
|
int rc;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2014-02-12 06:05:38 -07:00
|
|
|
rc = put_guest_lc(vcpu, 0x1004, (u16 __user *)__LC_EXT_INT_CODE);
|
|
|
|
rc |= write_guest_lc(vcpu, __LC_EXT_OLD_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw, sizeof(psw_t));
|
|
|
|
rc |= read_guest_lc(vcpu, __LC_EXT_NEW_PSW,
|
|
|
|
&vcpu->arch.sie_block->gpsw,
|
|
|
|
sizeof(psw_t));
|
2013-03-05 05:14:43 -07:00
|
|
|
if (rc) {
|
2008-07-25 07:51:54 -06:00
|
|
|
printk("kvm: The guest lowcore is not mapped during interrupt "
|
|
|
|
"delivery, killing userspace\n");
|
|
|
|
do_exit(SIGKILL);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2013-10-07 09:11:48 -06:00
|
|
|
int kvm_cpu_has_interrupt(struct kvm_vcpu *vcpu)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int rc = 0;
|
|
|
|
|
|
|
|
if (atomic_read(&li->active)) {
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_for_each_entry(inti, &li->list, list)
|
|
|
|
if (__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
rc = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((!rc) && atomic_read(&fi->active)) {
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_lock(&fi->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
list_for_each_entry(inti, &fi->list, list)
|
|
|
|
if (__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
rc = 1;
|
|
|
|
break;
|
|
|
|
}
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_unlock(&fi->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
|
2014-03-18 03:03:26 -06:00
|
|
|
if (!rc && kvm_cpu_has_pending_timer(vcpu))
|
|
|
|
rc = 1;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
2008-04-11 11:53:26 -06:00
|
|
|
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2014-03-18 03:03:26 -06:00
|
|
|
if (!(vcpu->arch.sie_block->ckc <
|
|
|
|
get_tod_clock_fast() + vcpu->arch.sie_block->epoch))
|
|
|
|
return 0;
|
|
|
|
if (!ckc_interrupts_enabled(vcpu))
|
|
|
|
return 0;
|
|
|
|
return 1;
|
2008-04-11 11:53:26 -06:00
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int kvm_s390_handle_wait(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
u64 now, sltime;
|
|
|
|
DECLARE_WAITQUEUE(wait, current);
|
|
|
|
|
|
|
|
vcpu->stat.exit_wait_state++;
|
|
|
|
if (kvm_cpu_has_interrupt(vcpu))
|
|
|
|
return 0;
|
|
|
|
|
2008-05-21 05:37:44 -06:00
|
|
|
__set_cpu_idle(vcpu);
|
|
|
|
spin_lock_bh(&vcpu->arch.local_int.lock);
|
|
|
|
vcpu->arch.local_int.timer_due = 0;
|
|
|
|
spin_unlock_bh(&vcpu->arch.local_int.lock);
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
if (psw_interrupts_disabled(vcpu)) {
|
|
|
|
VCPU_EVENT(vcpu, 3, "%s", "disabled wait");
|
|
|
|
__unset_cpu_idle(vcpu);
|
2010-02-26 14:37:41 -07:00
|
|
|
return -EOPNOTSUPP; /* disabled wait */
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
|
2014-03-18 03:03:26 -06:00
|
|
|
if (!ckc_interrupts_enabled(vcpu)) {
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
VCPU_EVENT(vcpu, 3, "%s", "enabled wait w/o timer");
|
|
|
|
goto no_timer;
|
|
|
|
}
|
|
|
|
|
2013-10-17 04:38:17 -06:00
|
|
|
now = get_tod_clock_fast() + vcpu->arch.sie_block->epoch;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
if (vcpu->arch.sie_block->ckc < now) {
|
|
|
|
__unset_cpu_idle(vcpu);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2013-01-14 08:55:55 -07:00
|
|
|
sltime = tod_to_ns(vcpu->arch.sie_block->ckc - now);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
hrtimer_start(&vcpu->arch.ckc_timer, ktime_set (0, sltime) , HRTIMER_MODE_REL);
|
|
|
|
VCPU_EVENT(vcpu, 5, "enabled wait via clock comparator: %llx ns", sltime);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
no_timer:
|
2013-09-12 02:33:45 -06:00
|
|
|
srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_lock(&vcpu->arch.local_int.float_int->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_lock_bh(&vcpu->arch.local_int.lock);
|
2013-06-12 05:54:55 -06:00
|
|
|
add_wait_queue(&vcpu->wq, &wait);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
while (list_empty(&vcpu->arch.local_int.list) &&
|
|
|
|
list_empty(&vcpu->arch.local_int.float_int->list) &&
|
|
|
|
(!vcpu->arch.local_int.timer_due) &&
|
|
|
|
!signal_pending(current)) {
|
|
|
|
set_current_state(TASK_INTERRUPTIBLE);
|
|
|
|
spin_unlock_bh(&vcpu->arch.local_int.lock);
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_unlock(&vcpu->arch.local_int.float_int->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
schedule();
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_lock(&vcpu->arch.local_int.float_int->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_lock_bh(&vcpu->arch.local_int.lock);
|
|
|
|
}
|
|
|
|
__unset_cpu_idle(vcpu);
|
|
|
|
__set_current_state(TASK_RUNNING);
|
2013-06-12 05:54:55 -06:00
|
|
|
remove_wait_queue(&vcpu->wq, &wait);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_unlock_bh(&vcpu->arch.local_int.lock);
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_unlock(&vcpu->arch.local_int.float_int->lock);
|
2013-09-12 02:33:45 -06:00
|
|
|
vcpu->srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
|
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
hrtimer_try_to_cancel(&vcpu->arch.ckc_timer);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
void kvm_s390_tasklet(unsigned long parm)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
2009-05-12 09:21:49 -06:00
|
|
|
struct kvm_vcpu *vcpu = (struct kvm_vcpu *) parm;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
spin_lock(&vcpu->arch.local_int.lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
vcpu->arch.local_int.timer_due = 1;
|
2013-06-12 05:54:55 -06:00
|
|
|
if (waitqueue_active(&vcpu->wq))
|
|
|
|
wake_up_interruptible(&vcpu->wq);
|
2009-05-12 09:21:49 -06:00
|
|
|
spin_unlock(&vcpu->arch.local_int.lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
|
2009-05-12 09:21:49 -06:00
|
|
|
/*
|
|
|
|
* low level hrtimer wake routine. Because this runs in hardirq context
|
|
|
|
* we schedule a tasklet to do the real work.
|
|
|
|
*/
|
|
|
|
enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer)
|
|
|
|
{
|
|
|
|
struct kvm_vcpu *vcpu;
|
|
|
|
|
|
|
|
vcpu = container_of(timer, struct kvm_vcpu, arch.ckc_timer);
|
2014-02-26 08:14:19 -07:00
|
|
|
vcpu->preempted = true;
|
2009-05-12 09:21:49 -06:00
|
|
|
tasklet_schedule(&vcpu->arch.tasklet);
|
|
|
|
|
|
|
|
return HRTIMER_NORESTART;
|
|
|
|
}
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2014-02-11 05:48:07 -07:00
|
|
|
void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_interrupt_info *n, *inti = NULL;
|
|
|
|
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_for_each_entry_safe(inti, n, &li->list, list) {
|
|
|
|
list_del(&inti->list);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
|
|
|
atomic_set(&li->active, 0);
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
void kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
|
|
|
|
struct kvm_s390_interrupt_info *n, *inti = NULL;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int deliver;
|
|
|
|
|
|
|
|
__reset_intercept_indicators(vcpu);
|
|
|
|
if (atomic_read(&li->active)) {
|
|
|
|
do {
|
|
|
|
deliver = 0;
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_for_each_entry_safe(inti, n, &li->list, list) {
|
|
|
|
if (__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
list_del(&inti->list);
|
|
|
|
deliver = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
__set_intercept_indicator(vcpu, inti);
|
|
|
|
}
|
|
|
|
if (list_empty(&li->list))
|
|
|
|
atomic_set(&li->active, 0);
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
if (deliver) {
|
|
|
|
__do_deliver_interrupt(vcpu, inti);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
|
|
|
} while (deliver);
|
|
|
|
}
|
|
|
|
|
2014-03-18 03:03:26 -06:00
|
|
|
if (kvm_cpu_has_pending_timer(vcpu))
|
|
|
|
deliver_ckc_interrupt(vcpu);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
if (atomic_read(&fi->active)) {
|
|
|
|
do {
|
|
|
|
deliver = 0;
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_lock(&fi->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
list_for_each_entry_safe(inti, n, &fi->list, list) {
|
|
|
|
if (__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
list_del(&inti->list);
|
2014-01-30 00:40:23 -07:00
|
|
|
fi->irq_count--;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
deliver = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
__set_intercept_indicator(vcpu, inti);
|
|
|
|
}
|
|
|
|
if (list_empty(&fi->list))
|
|
|
|
atomic_set(&fi->active, 0);
|
2009-05-12 09:21:50 -06:00
|
|
|
spin_unlock(&fi->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
if (deliver) {
|
|
|
|
__do_deliver_interrupt(vcpu, inti);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
|
|
|
} while (deliver);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2012-12-20 07:32:09 -07:00
|
|
|
void kvm_s390_deliver_pending_machine_checks(struct kvm_vcpu *vcpu)
|
|
|
|
{
|
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_float_interrupt *fi = vcpu->arch.local_int.float_int;
|
|
|
|
struct kvm_s390_interrupt_info *n, *inti = NULL;
|
|
|
|
int deliver;
|
|
|
|
|
|
|
|
__reset_intercept_indicators(vcpu);
|
|
|
|
if (atomic_read(&li->active)) {
|
|
|
|
do {
|
|
|
|
deliver = 0;
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_for_each_entry_safe(inti, n, &li->list, list) {
|
|
|
|
if ((inti->type == KVM_S390_MCHK) &&
|
|
|
|
__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
list_del(&inti->list);
|
|
|
|
deliver = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
__set_intercept_indicator(vcpu, inti);
|
|
|
|
}
|
|
|
|
if (list_empty(&li->list))
|
|
|
|
atomic_set(&li->active, 0);
|
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
if (deliver) {
|
|
|
|
__do_deliver_interrupt(vcpu, inti);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
|
|
|
} while (deliver);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (atomic_read(&fi->active)) {
|
|
|
|
do {
|
|
|
|
deliver = 0;
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
list_for_each_entry_safe(inti, n, &fi->list, list) {
|
|
|
|
if ((inti->type == KVM_S390_MCHK) &&
|
|
|
|
__interrupt_is_deliverable(vcpu, inti)) {
|
|
|
|
list_del(&inti->list);
|
2014-01-30 00:40:23 -07:00
|
|
|
fi->irq_count--;
|
2012-12-20 07:32:09 -07:00
|
|
|
deliver = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
__set_intercept_indicator(vcpu, inti);
|
|
|
|
}
|
|
|
|
if (list_empty(&fi->list))
|
|
|
|
atomic_set(&fi->active, 0);
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
if (deliver) {
|
|
|
|
__do_deliver_interrupt(vcpu, inti);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
|
|
|
} while (deliver);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
|
|
|
|
{
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2009-08-18 12:18:35 -06:00
|
|
|
inti->type = KVM_S390_PROGRAM_INT;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
inti->pgm.code = code;
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: program check %d (from kernel)", code);
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, inti->type, code, 0, 1);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_add(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
2013-06-12 05:54:55 -06:00
|
|
|
BUG_ON(waitqueue_active(li->wq));
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_unlock_bh(&li->lock);
|
2014-02-11 03:07:05 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_s390_pgm_info *pgm_info)
|
|
|
|
{
|
|
|
|
struct kvm_s390_local_interrupt *li = &vcpu->arch.local_int;
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
|
|
|
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: prog irq %d (from kernel)",
|
|
|
|
pgm_info->code);
|
|
|
|
trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, KVM_S390_PROGRAM_INT,
|
|
|
|
pgm_info->code, 0, 1);
|
|
|
|
|
|
|
|
inti->type = KVM_S390_PROGRAM_INT;
|
|
|
|
memcpy(&inti->pgm, pgm_info, sizeof(inti->pgm));
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
list_add(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
|
|
|
BUG_ON(waitqueue_active(li->wq));
|
|
|
|
spin_unlock_bh(&li->lock);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-12-20 07:32:12 -07:00
|
|
|
struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
|
|
|
|
u64 cr6, u64 schid)
|
|
|
|
{
|
|
|
|
struct kvm_s390_float_interrupt *fi;
|
|
|
|
struct kvm_s390_interrupt_info *inti, *iter;
|
|
|
|
|
|
|
|
if ((!schid && !cr6) || (schid && cr6))
|
|
|
|
return NULL;
|
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
fi = &kvm->arch.float_int;
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
inti = NULL;
|
|
|
|
list_for_each_entry(iter, &fi->list, list) {
|
|
|
|
if (!is_ioint(iter->type))
|
|
|
|
continue;
|
2013-02-07 05:20:52 -07:00
|
|
|
if (cr6 &&
|
|
|
|
((cr6 & int_word_to_isc_bits(iter->io.io_int_word)) == 0))
|
2012-12-20 07:32:12 -07:00
|
|
|
continue;
|
|
|
|
if (schid) {
|
|
|
|
if (((schid & 0x00000000ffff0000) >> 16) !=
|
|
|
|
iter->io.subchannel_id)
|
|
|
|
continue;
|
|
|
|
if ((schid & 0x000000000000ffff) !=
|
|
|
|
iter->io.subchannel_nr)
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
inti = iter;
|
|
|
|
break;
|
|
|
|
}
|
2014-01-30 00:40:23 -07:00
|
|
|
if (inti) {
|
2012-12-20 07:32:12 -07:00
|
|
|
list_del_init(&inti->list);
|
2014-01-30 00:40:23 -07:00
|
|
|
fi->irq_count--;
|
|
|
|
}
|
2012-12-20 07:32:12 -07:00
|
|
|
if (list_empty(&fi->list))
|
|
|
|
atomic_set(&fi->active, 0);
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
mutex_unlock(&kvm->lock);
|
|
|
|
return inti;
|
|
|
|
}
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2014-01-30 00:40:23 -07:00
|
|
|
static int __inject_vm(struct kvm *kvm, struct kvm_s390_interrupt_info *inti)
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
{
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_local_interrupt *li;
|
|
|
|
struct kvm_s390_float_interrupt *fi;
|
2013-10-07 08:13:45 -06:00
|
|
|
struct kvm_s390_interrupt_info *iter;
|
2014-02-25 07:36:45 -07:00
|
|
|
struct kvm_vcpu *dst_vcpu = NULL;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int sigcpu;
|
2014-01-30 00:40:23 -07:00
|
|
|
int rc = 0;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2013-10-07 08:13:45 -06:00
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
fi = &kvm->arch.float_int;
|
|
|
|
spin_lock(&fi->lock);
|
2014-01-30 00:40:23 -07:00
|
|
|
if (fi->irq_count >= KVM_S390_MAX_FLOAT_IRQS) {
|
|
|
|
rc = -EINVAL;
|
|
|
|
goto unlock_fi;
|
|
|
|
}
|
|
|
|
fi->irq_count++;
|
2013-10-07 08:13:45 -06:00
|
|
|
if (!is_ioint(inti->type)) {
|
|
|
|
list_add_tail(&inti->list, &fi->list);
|
|
|
|
} else {
|
|
|
|
u64 isc_bits = int_word_to_isc_bits(inti->io.io_int_word);
|
|
|
|
|
|
|
|
/* Keep I/O interrupts sorted in isc order. */
|
|
|
|
list_for_each_entry(iter, &fi->list, list) {
|
|
|
|
if (!is_ioint(iter->type))
|
|
|
|
continue;
|
|
|
|
if (int_word_to_isc_bits(iter->io.io_int_word)
|
|
|
|
<= isc_bits)
|
|
|
|
continue;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
list_add_tail(&inti->list, &iter->list);
|
|
|
|
}
|
|
|
|
atomic_set(&fi->active, 1);
|
|
|
|
sigcpu = find_first_bit(fi->idle_mask, KVM_MAX_VCPUS);
|
|
|
|
if (sigcpu == KVM_MAX_VCPUS) {
|
|
|
|
do {
|
|
|
|
sigcpu = fi->next_rr_cpu++;
|
|
|
|
if (sigcpu == KVM_MAX_VCPUS)
|
|
|
|
sigcpu = fi->next_rr_cpu = 0;
|
2014-02-25 07:36:45 -07:00
|
|
|
} while (kvm_get_vcpu(kvm, sigcpu) == NULL);
|
2013-10-07 08:13:45 -06:00
|
|
|
}
|
2014-02-25 07:36:45 -07:00
|
|
|
dst_vcpu = kvm_get_vcpu(kvm, sigcpu);
|
|
|
|
li = &dst_vcpu->arch.local_int;
|
2013-10-07 08:13:45 -06:00
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
|
|
|
|
if (waitqueue_active(li->wq))
|
|
|
|
wake_up_interruptible(li->wq);
|
2014-02-26 08:14:19 -07:00
|
|
|
kvm_get_vcpu(kvm, sigcpu)->preempted = true;
|
2013-10-07 08:13:45 -06:00
|
|
|
spin_unlock_bh(&li->lock);
|
2014-01-30 00:40:23 -07:00
|
|
|
unlock_fi:
|
2013-10-07 08:13:45 -06:00
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
mutex_unlock(&kvm->lock);
|
2014-01-30 00:40:23 -07:00
|
|
|
return rc;
|
2013-10-07 08:13:45 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_s390_inject_vm(struct kvm *kvm,
|
|
|
|
struct kvm_s390_interrupt *s390int)
|
|
|
|
{
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-10-07 08:13:45 -06:00
|
|
|
inti->type = s390int->type;
|
|
|
|
switch (inti->type) {
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
2009-01-09 04:14:56 -07:00
|
|
|
VM_EVENT(kvm, 5, "inject: virtio parm:%x,parm64:%llx",
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
s390int->parm, s390int->parm64);
|
|
|
|
inti->ext.ext_params = s390int->parm;
|
|
|
|
inti->ext.ext_params2 = s390int->parm64;
|
|
|
|
break;
|
|
|
|
case KVM_S390_INT_SERVICE:
|
|
|
|
VM_EVENT(kvm, 5, "inject: sclp parm:%x", s390int->parm);
|
|
|
|
inti->ext.ext_params = s390int->parm;
|
|
|
|
break;
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
|
|
|
inti->type = s390int->type;
|
|
|
|
inti->ext.ext_params2 = s390int->parm64;
|
|
|
|
break;
|
2012-12-20 07:32:09 -07:00
|
|
|
case KVM_S390_MCHK:
|
|
|
|
VM_EVENT(kvm, 5, "inject: machine check parm64:%llx",
|
|
|
|
s390int->parm64);
|
|
|
|
inti->mchk.cr14 = s390int->parm; /* upper bits are not used */
|
|
|
|
inti->mchk.mcic = s390int->parm64;
|
|
|
|
break;
|
2012-12-20 07:32:08 -07:00
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
2013-10-07 08:13:45 -06:00
|
|
|
if (inti->type & IOINT_AI_MASK)
|
2012-12-20 07:32:08 -07:00
|
|
|
VM_EVENT(kvm, 5, "%s", "inject: I/O (AI)");
|
|
|
|
else
|
|
|
|
VM_EVENT(kvm, 5, "inject: I/O css %x ss %x schid %04x",
|
|
|
|
s390int->type & IOINT_CSSID_MASK,
|
|
|
|
s390int->type & IOINT_SSID_MASK,
|
|
|
|
s390int->type & IOINT_SCHID_MASK);
|
|
|
|
inti->io.subchannel_id = s390int->parm >> 16;
|
|
|
|
inti->io.subchannel_nr = s390int->parm & 0x0000ffffu;
|
|
|
|
inti->io.io_int_parm = s390int->parm64 >> 32;
|
|
|
|
inti->io.io_int_word = s390int->parm64 & 0x00000000ffffffffull;
|
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
default:
|
|
|
|
kfree(inti);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_inject_vm(s390int->type, s390int->parm, s390int->parm64,
|
|
|
|
2);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
2014-01-30 00:40:23 -07:00
|
|
|
return __inject_vm(kvm, inti);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
}
|
|
|
|
|
2014-01-08 10:07:54 -07:00
|
|
|
void kvm_s390_reinject_io_int(struct kvm *kvm,
|
|
|
|
struct kvm_s390_interrupt_info *inti)
|
|
|
|
{
|
|
|
|
__inject_vm(kvm, inti);
|
|
|
|
}
|
|
|
|
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
int kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
|
|
|
|
struct kvm_s390_interrupt *s390int)
|
|
|
|
{
|
2008-06-27 07:05:40 -06:00
|
|
|
struct kvm_s390_local_interrupt *li;
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
switch (s390int->type) {
|
|
|
|
case KVM_S390_PROGRAM_INT:
|
|
|
|
if (s390int->parm & 0xffff0000) {
|
|
|
|
kfree(inti);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
inti->type = s390int->type;
|
|
|
|
inti->pgm.code = s390int->parm;
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: program check %d (from user)",
|
|
|
|
s390int->parm);
|
|
|
|
break;
|
2009-01-22 02:29:08 -07:00
|
|
|
case KVM_S390_SIGP_SET_PREFIX:
|
|
|
|
inti->prefix.address = s390int->parm;
|
|
|
|
inti->type = s390int->type;
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: set prefix to %x (from user)",
|
|
|
|
s390int->parm);
|
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_SIGP_STOP:
|
|
|
|
case KVM_S390_RESTART:
|
2012-10-02 08:25:36 -06:00
|
|
|
VCPU_EVENT(vcpu, 3, "inject: type %x", s390int->type);
|
|
|
|
inti->type = s390int->type;
|
|
|
|
break;
|
2011-10-18 04:27:15 -06:00
|
|
|
case KVM_S390_INT_EXTERNAL_CALL:
|
2012-10-02 08:25:36 -06:00
|
|
|
if (s390int->parm & 0xffff0000) {
|
|
|
|
kfree(inti);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: external call source-cpu:%u",
|
|
|
|
s390int->parm);
|
|
|
|
inti->type = s390int->type;
|
|
|
|
inti->extcall.code = s390int->parm;
|
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_EMERGENCY:
|
2012-10-02 08:25:36 -06:00
|
|
|
if (s390int->parm & 0xffff0000) {
|
|
|
|
kfree(inti);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
VCPU_EVENT(vcpu, 3, "inject: emergency %u\n", s390int->parm);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
inti->type = s390int->type;
|
2012-10-02 08:25:36 -06:00
|
|
|
inti->emerg.code = s390int->parm;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
break;
|
2012-12-20 07:32:09 -07:00
|
|
|
case KVM_S390_MCHK:
|
|
|
|
VCPU_EVENT(vcpu, 5, "inject: machine check parm64:%llx",
|
|
|
|
s390int->parm64);
|
|
|
|
inti->type = s390int->type;
|
|
|
|
inti->mchk.mcic = s390int->parm64;
|
|
|
|
break;
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
inti->type = s390int->type;
|
|
|
|
inti->ext.ext_params2 = s390int->parm64;
|
|
|
|
break;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
|
|
|
case KVM_S390_INT_SERVICE:
|
2012-12-20 07:32:08 -07:00
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
default:
|
|
|
|
kfree(inti);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2012-07-23 09:20:30 -06:00
|
|
|
trace_kvm_s390_inject_vcpu(vcpu->vcpu_id, s390int->type, s390int->parm,
|
|
|
|
s390int->parm64, 2);
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
|
|
|
|
mutex_lock(&vcpu->kvm->lock);
|
|
|
|
li = &vcpu->arch.local_int;
|
|
|
|
spin_lock_bh(&li->lock);
|
|
|
|
if (inti->type == KVM_S390_PROGRAM_INT)
|
|
|
|
list_add(&inti->list, &li->list);
|
|
|
|
else
|
|
|
|
list_add_tail(&inti->list, &li->list);
|
|
|
|
atomic_set(&li->active, 1);
|
|
|
|
if (inti->type == KVM_S390_SIGP_STOP)
|
|
|
|
li->action_bits |= ACTION_STOP_ON_STOP;
|
|
|
|
atomic_set_mask(CPUSTAT_EXT_INT, li->cpuflags);
|
2013-06-12 05:54:55 -06:00
|
|
|
if (waitqueue_active(&vcpu->wq))
|
|
|
|
wake_up_interruptible(&vcpu->wq);
|
2014-02-26 08:14:19 -07:00
|
|
|
vcpu->preempted = true;
|
KVM: s390: interrupt subsystem, cpu timer, waitpsw
This patch contains the s390 interrupt subsystem (similar to in kernel apic)
including timer interrupts (similar to in-kernel-pit) and enabled wait
(similar to in kernel hlt).
In order to achieve that, this patch also introduces intercept handling
for instruction intercepts, and it implements load control instructions.
This patch introduces an ioctl KVM_S390_INTERRUPT which is valid for both
the vm file descriptors and the vcpu file descriptors. In case this ioctl is
issued against a vm file descriptor, the interrupt is considered floating.
Floating interrupts may be delivered to any virtual cpu in the configuration.
The following interrupts are supported:
SIGP STOP - interprocessor signal that stops a remote cpu
SIGP SET PREFIX - interprocessor signal that sets the prefix register of a
(stopped) remote cpu
INT EMERGENCY - interprocessor interrupt, usually used to signal need_reshed
and for smp_call_function() in the guest.
PROGRAM INT - exception during program execution such as page fault, illegal
instruction and friends
RESTART - interprocessor signal that starts a stopped cpu
INT VIRTIO - floating interrupt for virtio signalisation
INT SERVICE - floating interrupt for signalisations from the system
service processor
struct kvm_s390_interrupt, which is submitted as ioctl parameter when injecting
an interrupt, also carrys parameter data for interrupts along with the interrupt
type. Interrupts on s390 usually have a state that represents the current
operation, or identifies which device has caused the interruption on s390.
kvm_s390_handle_wait() does handle waitpsw in two flavors: in case of a
disabled wait (that is, disabled for interrupts), we exit to userspace. In case
of an enabled wait we set up a timer that equals the cpu clock comparator value
and sleep on a wait queue.
[christian: change virtio interrupt to 0x2603]
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
2008-03-25 11:47:26 -06:00
|
|
|
spin_unlock_bh(&li->lock);
|
|
|
|
mutex_unlock(&vcpu->kvm->lock);
|
|
|
|
return 0;
|
|
|
|
}
|
2013-10-07 08:13:45 -06:00
|
|
|
|
2014-03-25 10:09:08 -06:00
|
|
|
void kvm_s390_clear_float_irqs(struct kvm *kvm)
|
2013-10-07 08:13:45 -06:00
|
|
|
{
|
|
|
|
struct kvm_s390_float_interrupt *fi;
|
|
|
|
struct kvm_s390_interrupt_info *n, *inti = NULL;
|
|
|
|
|
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
fi = &kvm->arch.float_int;
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
list_for_each_entry_safe(inti, n, &fi->list, list) {
|
|
|
|
list_del(&inti->list);
|
|
|
|
kfree(inti);
|
|
|
|
}
|
2014-01-30 00:40:23 -07:00
|
|
|
fi->irq_count = 0;
|
2013-10-07 08:13:45 -06:00
|
|
|
atomic_set(&fi->active, 0);
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
mutex_unlock(&kvm->lock);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int copy_irq_to_user(struct kvm_s390_interrupt_info *inti,
|
|
|
|
u8 *addr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_irq __user *uptr = (struct kvm_s390_irq __user *) addr;
|
|
|
|
struct kvm_s390_irq irq = {0};
|
|
|
|
|
|
|
|
irq.type = inti->type;
|
|
|
|
switch (inti->type) {
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
2013-10-07 08:13:45 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
|
|
|
case KVM_S390_INT_SERVICE:
|
|
|
|
irq.u.ext = inti->ext;
|
|
|
|
break;
|
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
|
|
|
irq.u.io = inti->io;
|
|
|
|
break;
|
|
|
|
case KVM_S390_MCHK:
|
|
|
|
irq.u.mchk = inti->mchk;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (copy_to_user(uptr, &irq, sizeof(irq)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int get_all_floating_irqs(struct kvm *kvm, __u8 *buf, __u64 len)
|
|
|
|
{
|
|
|
|
struct kvm_s390_interrupt_info *inti;
|
|
|
|
struct kvm_s390_float_interrupt *fi;
|
|
|
|
int ret = 0;
|
|
|
|
int n = 0;
|
|
|
|
|
|
|
|
mutex_lock(&kvm->lock);
|
|
|
|
fi = &kvm->arch.float_int;
|
|
|
|
spin_lock(&fi->lock);
|
|
|
|
|
|
|
|
list_for_each_entry(inti, &fi->list, list) {
|
|
|
|
if (len < sizeof(struct kvm_s390_irq)) {
|
|
|
|
/* signal userspace to try again */
|
|
|
|
ret = -ENOMEM;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
ret = copy_irq_to_user(inti, buf);
|
|
|
|
if (ret)
|
|
|
|
break;
|
|
|
|
buf += sizeof(struct kvm_s390_irq);
|
|
|
|
len -= sizeof(struct kvm_s390_irq);
|
|
|
|
n++;
|
|
|
|
}
|
|
|
|
|
|
|
|
spin_unlock(&fi->lock);
|
|
|
|
mutex_unlock(&kvm->lock);
|
|
|
|
|
|
|
|
return ret < 0 ? ret : n;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int flic_get_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
|
|
|
|
{
|
|
|
|
int r;
|
|
|
|
|
|
|
|
switch (attr->group) {
|
|
|
|
case KVM_DEV_FLIC_GET_ALL_IRQS:
|
|
|
|
r = get_all_floating_irqs(dev->kvm, (u8 *) attr->addr,
|
|
|
|
attr->attr);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline int copy_irq_from_user(struct kvm_s390_interrupt_info *inti,
|
|
|
|
u64 addr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_irq __user *uptr = (struct kvm_s390_irq __user *) addr;
|
|
|
|
void *target = NULL;
|
|
|
|
void __user *source;
|
|
|
|
u64 size;
|
|
|
|
|
|
|
|
if (get_user(inti->type, (u64 __user *)addr))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
switch (inti->type) {
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_S390_INT_PFAULT_INIT:
|
|
|
|
case KVM_S390_INT_PFAULT_DONE:
|
2013-10-07 08:13:45 -06:00
|
|
|
case KVM_S390_INT_VIRTIO:
|
|
|
|
case KVM_S390_INT_SERVICE:
|
|
|
|
target = (void *) &inti->ext;
|
|
|
|
source = &uptr->u.ext;
|
|
|
|
size = sizeof(inti->ext);
|
|
|
|
break;
|
|
|
|
case KVM_S390_INT_IO_MIN...KVM_S390_INT_IO_MAX:
|
|
|
|
target = (void *) &inti->io;
|
|
|
|
source = &uptr->u.io;
|
|
|
|
size = sizeof(inti->io);
|
|
|
|
break;
|
|
|
|
case KVM_S390_MCHK:
|
|
|
|
target = (void *) &inti->mchk;
|
|
|
|
source = &uptr->u.mchk;
|
|
|
|
size = sizeof(inti->mchk);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (copy_from_user(target, source, size))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int enqueue_floating_irq(struct kvm_device *dev,
|
|
|
|
struct kvm_device_attr *attr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_interrupt_info *inti = NULL;
|
|
|
|
int r = 0;
|
|
|
|
int len = attr->attr;
|
|
|
|
|
|
|
|
if (len % sizeof(struct kvm_s390_irq) != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
else if (len > KVM_S390_FLIC_MAX_BUFFER)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
while (len >= sizeof(struct kvm_s390_irq)) {
|
|
|
|
inti = kzalloc(sizeof(*inti), GFP_KERNEL);
|
|
|
|
if (!inti)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
r = copy_irq_from_user(inti, attr->addr);
|
|
|
|
if (r) {
|
|
|
|
kfree(inti);
|
|
|
|
return r;
|
|
|
|
}
|
2014-01-30 00:40:23 -07:00
|
|
|
r = __inject_vm(dev->kvm, inti);
|
|
|
|
if (r) {
|
|
|
|
kfree(inti);
|
|
|
|
return r;
|
|
|
|
}
|
2013-10-07 08:13:45 -06:00
|
|
|
len -= sizeof(struct kvm_s390_irq);
|
|
|
|
attr->addr += sizeof(struct kvm_s390_irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
2013-07-15 05:36:01 -06:00
|
|
|
static struct s390_io_adapter *get_io_adapter(struct kvm *kvm, unsigned int id)
|
|
|
|
{
|
|
|
|
if (id >= MAX_S390_IO_ADAPTERS)
|
|
|
|
return NULL;
|
|
|
|
return kvm->arch.adapters[id];
|
|
|
|
}
|
|
|
|
|
|
|
|
static int register_io_adapter(struct kvm_device *dev,
|
|
|
|
struct kvm_device_attr *attr)
|
|
|
|
{
|
|
|
|
struct s390_io_adapter *adapter;
|
|
|
|
struct kvm_s390_io_adapter adapter_info;
|
|
|
|
|
|
|
|
if (copy_from_user(&adapter_info,
|
|
|
|
(void __user *)attr->addr, sizeof(adapter_info)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
if ((adapter_info.id >= MAX_S390_IO_ADAPTERS) ||
|
|
|
|
(dev->kvm->arch.adapters[adapter_info.id] != NULL))
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
|
|
|
|
if (!adapter)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
|
|
|
INIT_LIST_HEAD(&adapter->maps);
|
|
|
|
init_rwsem(&adapter->maps_lock);
|
|
|
|
atomic_set(&adapter->nr_maps, 0);
|
|
|
|
adapter->id = adapter_info.id;
|
|
|
|
adapter->isc = adapter_info.isc;
|
|
|
|
adapter->maskable = adapter_info.maskable;
|
|
|
|
adapter->masked = false;
|
|
|
|
adapter->swap = adapter_info.swap;
|
|
|
|
dev->kvm->arch.adapters[adapter->id] = adapter;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct s390_io_adapter *adapter = get_io_adapter(kvm, id);
|
|
|
|
|
|
|
|
if (!adapter || !adapter->maskable)
|
|
|
|
return -EINVAL;
|
|
|
|
ret = adapter->masked;
|
|
|
|
adapter->masked = masked;
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_s390_adapter_map(struct kvm *kvm, unsigned int id, __u64 addr)
|
|
|
|
{
|
|
|
|
struct s390_io_adapter *adapter = get_io_adapter(kvm, id);
|
|
|
|
struct s390_map_info *map;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (!adapter || !addr)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
map = kzalloc(sizeof(*map), GFP_KERNEL);
|
|
|
|
if (!map) {
|
|
|
|
ret = -ENOMEM;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
INIT_LIST_HEAD(&map->list);
|
|
|
|
map->guest_addr = addr;
|
|
|
|
map->addr = gmap_translate(addr, kvm->arch.gmap);
|
|
|
|
if (map->addr == -EFAULT) {
|
|
|
|
ret = -EFAULT;
|
|
|
|
goto out;
|
|
|
|
}
|
|
|
|
ret = get_user_pages_fast(map->addr, 1, 1, &map->page);
|
|
|
|
if (ret < 0)
|
|
|
|
goto out;
|
|
|
|
BUG_ON(ret != 1);
|
|
|
|
down_write(&adapter->maps_lock);
|
|
|
|
if (atomic_inc_return(&adapter->nr_maps) < MAX_S390_ADAPTER_MAPS) {
|
|
|
|
list_add_tail(&map->list, &adapter->maps);
|
|
|
|
ret = 0;
|
|
|
|
} else {
|
|
|
|
put_page(map->page);
|
|
|
|
ret = -EINVAL;
|
|
|
|
}
|
|
|
|
up_write(&adapter->maps_lock);
|
|
|
|
out:
|
|
|
|
if (ret)
|
|
|
|
kfree(map);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int kvm_s390_adapter_unmap(struct kvm *kvm, unsigned int id, __u64 addr)
|
|
|
|
{
|
|
|
|
struct s390_io_adapter *adapter = get_io_adapter(kvm, id);
|
|
|
|
struct s390_map_info *map, *tmp;
|
|
|
|
int found = 0;
|
|
|
|
|
|
|
|
if (!adapter || !addr)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
down_write(&adapter->maps_lock);
|
|
|
|
list_for_each_entry_safe(map, tmp, &adapter->maps, list) {
|
|
|
|
if (map->guest_addr == addr) {
|
|
|
|
found = 1;
|
|
|
|
atomic_dec(&adapter->nr_maps);
|
|
|
|
list_del(&map->list);
|
|
|
|
put_page(map->page);
|
|
|
|
kfree(map);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
up_write(&adapter->maps_lock);
|
|
|
|
|
|
|
|
return found ? 0 : -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
void kvm_s390_destroy_adapters(struct kvm *kvm)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
struct s390_map_info *map, *tmp;
|
|
|
|
|
|
|
|
for (i = 0; i < MAX_S390_IO_ADAPTERS; i++) {
|
|
|
|
if (!kvm->arch.adapters[i])
|
|
|
|
continue;
|
|
|
|
list_for_each_entry_safe(map, tmp,
|
|
|
|
&kvm->arch.adapters[i]->maps, list) {
|
|
|
|
list_del(&map->list);
|
|
|
|
put_page(map->page);
|
|
|
|
kfree(map);
|
|
|
|
}
|
|
|
|
kfree(kvm->arch.adapters[i]);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int modify_io_adapter(struct kvm_device *dev,
|
|
|
|
struct kvm_device_attr *attr)
|
|
|
|
{
|
|
|
|
struct kvm_s390_io_adapter_req req;
|
|
|
|
struct s390_io_adapter *adapter;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
if (copy_from_user(&req, (void __user *)attr->addr, sizeof(req)))
|
|
|
|
return -EFAULT;
|
|
|
|
|
|
|
|
adapter = get_io_adapter(dev->kvm, req.id);
|
|
|
|
if (!adapter)
|
|
|
|
return -EINVAL;
|
|
|
|
switch (req.type) {
|
|
|
|
case KVM_S390_IO_ADAPTER_MASK:
|
|
|
|
ret = kvm_s390_mask_adapter(dev->kvm, req.id, req.mask);
|
|
|
|
if (ret > 0)
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
case KVM_S390_IO_ADAPTER_MAP:
|
|
|
|
ret = kvm_s390_adapter_map(dev->kvm, req.id, req.addr);
|
|
|
|
break;
|
|
|
|
case KVM_S390_IO_ADAPTER_UNMAP:
|
|
|
|
ret = kvm_s390_adapter_unmap(dev->kvm, req.id, req.addr);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2013-10-07 08:13:45 -06:00
|
|
|
static int flic_set_attr(struct kvm_device *dev, struct kvm_device_attr *attr)
|
|
|
|
{
|
|
|
|
int r = 0;
|
2013-10-07 09:11:48 -06:00
|
|
|
unsigned int i;
|
|
|
|
struct kvm_vcpu *vcpu;
|
2013-10-07 08:13:45 -06:00
|
|
|
|
|
|
|
switch (attr->group) {
|
|
|
|
case KVM_DEV_FLIC_ENQUEUE:
|
|
|
|
r = enqueue_floating_irq(dev, attr);
|
|
|
|
break;
|
|
|
|
case KVM_DEV_FLIC_CLEAR_IRQS:
|
|
|
|
r = 0;
|
2014-03-25 10:09:08 -06:00
|
|
|
kvm_s390_clear_float_irqs(dev->kvm);
|
2013-10-07 08:13:45 -06:00
|
|
|
break;
|
2013-10-07 09:11:48 -06:00
|
|
|
case KVM_DEV_FLIC_APF_ENABLE:
|
|
|
|
dev->kvm->arch.gmap->pfault_enabled = 1;
|
|
|
|
break;
|
|
|
|
case KVM_DEV_FLIC_APF_DISABLE_WAIT:
|
|
|
|
dev->kvm->arch.gmap->pfault_enabled = 0;
|
|
|
|
/*
|
|
|
|
* Make sure no async faults are in transition when
|
|
|
|
* clearing the queues. So we don't need to worry
|
|
|
|
* about late coming workers.
|
|
|
|
*/
|
|
|
|
synchronize_srcu(&dev->kvm->srcu);
|
|
|
|
kvm_for_each_vcpu(i, vcpu, dev->kvm)
|
|
|
|
kvm_clear_async_pf_completion_queue(vcpu);
|
|
|
|
break;
|
2013-07-15 05:36:01 -06:00
|
|
|
case KVM_DEV_FLIC_ADAPTER_REGISTER:
|
|
|
|
r = register_io_adapter(dev, attr);
|
|
|
|
break;
|
|
|
|
case KVM_DEV_FLIC_ADAPTER_MODIFY:
|
|
|
|
r = modify_io_adapter(dev, attr);
|
|
|
|
break;
|
2013-10-07 08:13:45 -06:00
|
|
|
default:
|
|
|
|
r = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int flic_create(struct kvm_device *dev, u32 type)
|
|
|
|
{
|
|
|
|
if (!dev)
|
|
|
|
return -EINVAL;
|
|
|
|
if (dev->kvm->arch.flic)
|
|
|
|
return -EINVAL;
|
|
|
|
dev->kvm->arch.flic = dev;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void flic_destroy(struct kvm_device *dev)
|
|
|
|
{
|
|
|
|
dev->kvm->arch.flic = NULL;
|
|
|
|
kfree(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* s390 floating irq controller (flic) */
|
|
|
|
struct kvm_device_ops kvm_flic_ops = {
|
|
|
|
.name = "kvm-flic",
|
|
|
|
.get_attr = flic_get_attr,
|
|
|
|
.set_attr = flic_set_attr,
|
|
|
|
.create = flic_create,
|
|
|
|
.destroy = flic_destroy,
|
|
|
|
};
|
2013-07-15 05:36:01 -06:00
|
|
|
|
|
|
|
static unsigned long get_ind_bit(__u64 addr, unsigned long bit_nr, bool swap)
|
|
|
|
{
|
|
|
|
unsigned long bit;
|
|
|
|
|
|
|
|
bit = bit_nr + (addr % PAGE_SIZE) * 8;
|
|
|
|
|
|
|
|
return swap ? (bit ^ (BITS_PER_LONG - 1)) : bit;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct s390_map_info *get_map_info(struct s390_io_adapter *adapter,
|
|
|
|
u64 addr)
|
|
|
|
{
|
|
|
|
struct s390_map_info *map;
|
|
|
|
|
|
|
|
if (!adapter)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
list_for_each_entry(map, &adapter->maps, list) {
|
|
|
|
if (map->guest_addr == addr)
|
|
|
|
return map;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int adapter_indicators_set(struct kvm *kvm,
|
|
|
|
struct s390_io_adapter *adapter,
|
|
|
|
struct kvm_s390_adapter_int *adapter_int)
|
|
|
|
{
|
|
|
|
unsigned long bit;
|
|
|
|
int summary_set, idx;
|
|
|
|
struct s390_map_info *info;
|
|
|
|
void *map;
|
|
|
|
|
|
|
|
info = get_map_info(adapter, adapter_int->ind_addr);
|
|
|
|
if (!info)
|
|
|
|
return -1;
|
|
|
|
map = page_address(info->page);
|
|
|
|
bit = get_ind_bit(info->addr, adapter_int->ind_offset, adapter->swap);
|
|
|
|
set_bit(bit, map);
|
|
|
|
idx = srcu_read_lock(&kvm->srcu);
|
|
|
|
mark_page_dirty(kvm, info->guest_addr >> PAGE_SHIFT);
|
|
|
|
set_page_dirty_lock(info->page);
|
|
|
|
info = get_map_info(adapter, adapter_int->summary_addr);
|
|
|
|
if (!info) {
|
|
|
|
srcu_read_unlock(&kvm->srcu, idx);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
map = page_address(info->page);
|
|
|
|
bit = get_ind_bit(info->addr, adapter_int->summary_offset,
|
|
|
|
adapter->swap);
|
|
|
|
summary_set = test_and_set_bit(bit, map);
|
|
|
|
mark_page_dirty(kvm, info->guest_addr >> PAGE_SHIFT);
|
|
|
|
set_page_dirty_lock(info->page);
|
|
|
|
srcu_read_unlock(&kvm->srcu, idx);
|
|
|
|
return summary_set ? 0 : 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* < 0 - not injected due to error
|
|
|
|
* = 0 - coalesced, summary indicator already active
|
|
|
|
* > 0 - injected interrupt
|
|
|
|
*/
|
|
|
|
static int set_adapter_int(struct kvm_kernel_irq_routing_entry *e,
|
|
|
|
struct kvm *kvm, int irq_source_id, int level,
|
|
|
|
bool line_status)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
struct s390_io_adapter *adapter;
|
|
|
|
|
|
|
|
/* We're only interested in the 0->1 transition. */
|
|
|
|
if (!level)
|
|
|
|
return 0;
|
|
|
|
adapter = get_io_adapter(kvm, e->adapter.adapter_id);
|
|
|
|
if (!adapter)
|
|
|
|
return -1;
|
|
|
|
down_read(&adapter->maps_lock);
|
|
|
|
ret = adapter_indicators_set(kvm, adapter, &e->adapter);
|
|
|
|
up_read(&adapter->maps_lock);
|
|
|
|
if ((ret > 0) && !adapter->masked) {
|
|
|
|
struct kvm_s390_interrupt s390int = {
|
|
|
|
.type = KVM_S390_INT_IO(1, 0, 0, 0),
|
|
|
|
.parm = 0,
|
|
|
|
.parm64 = (adapter->isc << 27) | 0x80000000,
|
|
|
|
};
|
|
|
|
ret = kvm_s390_inject_vm(kvm, &s390int);
|
|
|
|
if (ret == 0)
|
|
|
|
ret = 1;
|
|
|
|
}
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_set_routing_entry(struct kvm_irq_routing_table *rt,
|
|
|
|
struct kvm_kernel_irq_routing_entry *e,
|
|
|
|
const struct kvm_irq_routing_entry *ue)
|
|
|
|
{
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
switch (ue->type) {
|
|
|
|
case KVM_IRQ_ROUTING_S390_ADAPTER:
|
|
|
|
e->set = set_adapter_int;
|
|
|
|
e->adapter.summary_addr = ue->u.adapter.summary_addr;
|
|
|
|
e->adapter.ind_addr = ue->u.adapter.ind_addr;
|
|
|
|
e->adapter.summary_offset = ue->u.adapter.summary_offset;
|
|
|
|
e->adapter.ind_offset = ue->u.adapter.ind_offset;
|
|
|
|
e->adapter.adapter_id = ue->u.adapter.adapter_id;
|
|
|
|
ret = 0;
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ret = -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *e, struct kvm *kvm,
|
|
|
|
int irq_source_id, int level, bool line_status)
|
|
|
|
{
|
|
|
|
return -EINVAL;
|
|
|
|
}
|