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xen: fixes for xen

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Merge tag 'for-linus-5.5a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen updates from Juergen Gross:

 - a small series to remove the build constraint of Xen x86 MCE handling
   to 64-bit only

 - a bunch of minor cleanups

* tag 'for-linus-5.5a-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: Fix Kconfig indentation
  xen/mcelog: also allow building for 32-bit kernels
  xen/mcelog: add PPIN to record when available
  xen/mcelog: drop __MC_MSR_MCGCAP
  xen/gntdev: Use select for DMA_SHARED_BUFFER
  xen: mm: make xen_mm_init static
  xen: mm: include <xen/xen-ops.h> for missing declarations
This commit is contained in:
Linus Torvalds 2019-11-25 17:45:31 -08:00
parent 2981dcf333 23c1cce9f3
commit 3f3c8be973
5 changed files with 56 additions and 36 deletions
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3
arch/arm/xen/mm.c
View file

@ -15,6 +15,7 @@
#include <xen/interface/grant_table.h>
#include <xen/interface/memory.h>
#include <xen/page.h>
#include <xen/xen-ops.h>
#include <xen/swiotlb-xen.h>
#include <asm/cacheflush.h>
@ -133,7 +134,7 @@ void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order)
return;
}
int __init xen_mm_init(void)
static int __init xen_mm_init(void)
{
struct gnttab_cache_flush cflush;
if (!xen_initial_domain())

2
arch/x86/include/asm/msr-index.h
View file

@ -409,6 +409,8 @@
#define MSR_AMD_PSTATE_DEF_BASE 0xc0010064
#define MSR_AMD64_OSVW_ID_LENGTH 0xc0010140
#define MSR_AMD64_OSVW_STATUS 0xc0010141
#define MSR_AMD_PPIN_CTL 0xc00102f0
#define MSR_AMD_PPIN 0xc00102f1
#define MSR_AMD64_LS_CFG 0xc0011020
#define MSR_AMD64_DC_CFG 0xc0011022
#define MSR_AMD64_BU_CFG2 0xc001102a

63
drivers/xen/Kconfig
View file

@ -106,27 +106,27 @@ config XENFS
If in doubt, say yes.
config XEN_COMPAT_XENFS
bool "Create compatibility mount point /proc/xen"
depends on XENFS
default y
help
The old xenstore userspace tools expect to find "xenbus"
under /proc/xen, but "xenbus" is now found at the root of the
xenfs filesystem. Selecting this causes the kernel to create
the compatibility mount point /proc/xen if it is running on
a xen platform.
If in doubt, say yes.
bool "Create compatibility mount point /proc/xen"
depends on XENFS
default y
help
The old xenstore userspace tools expect to find "xenbus"
under /proc/xen, but "xenbus" is now found at the root of the
xenfs filesystem. Selecting this causes the kernel to create
the compatibility mount point /proc/xen if it is running on
a xen platform.
If in doubt, say yes.
config XEN_SYS_HYPERVISOR
bool "Create xen entries under /sys/hypervisor"
depends on SYSFS
select SYS_HYPERVISOR
default y
help
Create entries under /sys/hypervisor describing the Xen
hypervisor environment. When running native or in another
virtual environment, /sys/hypervisor will still be present,
but will have no xen contents.
bool "Create xen entries under /sys/hypervisor"
depends on SYSFS
select SYS_HYPERVISOR
default y
help
Create entries under /sys/hypervisor describing the Xen
hypervisor environment. When running native or in another
virtual environment, /sys/hypervisor will still be present,
but will have no xen contents.
config XEN_XENBUS_FRONTEND
tristate
@ -141,7 +141,8 @@ config XEN_GNTDEV
config XEN_GNTDEV_DMABUF
bool "Add support for dma-buf grant access device driver extension"
depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC && DMA_SHARED_BUFFER
depends on XEN_GNTDEV && XEN_GRANT_DMA_ALLOC
select DMA_SHARED_BUFFER
help
Allows userspace processes and kernel modules to use Xen backed
dma-buf implementation. With this extension grant references to
@ -270,7 +271,7 @@ config XEN_ACPI_PROCESSOR
depends on XEN && XEN_DOM0 && X86 && ACPI_PROCESSOR && CPU_FREQ
default m
help
This ACPI processor uploads Power Management information to the Xen
This ACPI processor uploads Power Management information to the Xen
hypervisor.
To do that the driver parses the Power Management data and uploads
@ -279,19 +280,19 @@ config XEN_ACPI_PROCESSOR
SMM so that other drivers (such as ACPI cpufreq scaling driver) will
not load.
To compile this driver as a module, choose M here: the module will be
To compile this driver as a module, choose M here: the module will be
called xen_acpi_processor If you do not know what to choose, select
M here. If the CPUFREQ drivers are built in, select Y here.
config XEN_MCE_LOG
bool "Xen platform mcelog"
depends on XEN_DOM0 && X86_64 && X86_MCE
depends on XEN_DOM0 && X86_MCE
help
Allow kernel fetching MCE error from Xen platform and
converting it into Linux mcelog format for mcelog tools
config XEN_HAVE_PVMMU
bool
bool
config XEN_EFI
def_bool y
@ -308,15 +309,15 @@ config XEN_ACPI
depends on X86 && ACPI
config XEN_SYMS
bool "Xen symbols"
depends on X86 && XEN_DOM0 && XENFS
default y if KALLSYMS
help
Exports hypervisor symbols (along with their types and addresses) via
/proc/xen/xensyms file, similar to /proc/kallsyms
bool "Xen symbols"
depends on X86 && XEN_DOM0 && XENFS
default y if KALLSYMS
help
Exports hypervisor symbols (along with their types and addresses) via
/proc/xen/xensyms file, similar to /proc/kallsyms
config XEN_HAVE_VPMU
bool
bool
config XEN_FRONT_PGDIR_SHBUF
tristate

14
drivers/xen/mcelog.c
View file

@ -222,7 +222,7 @@ static int convert_log(struct mc_info *mi)
struct mcinfo_global *mc_global;
struct mcinfo_bank *mc_bank;
struct xen_mce m;
uint32_t i;
unsigned int i, j;
mic = NULL;
x86_mcinfo_lookup(&mic, mi, MC_TYPE_GLOBAL);
@ -248,7 +248,17 @@ static int convert_log(struct mc_info *mi)
m.socketid = g_physinfo[i].mc_chipid;
m.cpu = m.extcpu = g_physinfo[i].mc_cpunr;
m.cpuvendor = (__u8)g_physinfo[i].mc_vendor;
m.mcgcap = g_physinfo[i].mc_msrvalues[__MC_MSR_MCGCAP].value;
for (j = 0; j < g_physinfo[i].mc_nmsrvals; ++j)
switch (g_physinfo[i].mc_msrvalues[j].reg) {
case MSR_IA32_MCG_CAP:
m.mcgcap = g_physinfo[i].mc_msrvalues[j].value;
break;
case MSR_PPIN:
case MSR_AMD_PPIN:
m.ppin = g_physinfo[i].mc_msrvalues[j].value;
break;
}
mic = NULL;
x86_mcinfo_lookup(&mic, mi, MC_TYPE_BANK);

10
include/xen/interface/xen-mca.h
View file

@ -183,7 +183,6 @@ struct mc_info {
DEFINE_GUEST_HANDLE_STRUCT(mc_info);
#define __MC_MSR_ARRAYSIZE 8
#define __MC_MSR_MCGCAP 0
#define __MC_NMSRS 1
#define MC_NCAPS 7
struct mcinfo_logical_cpu {
@ -332,7 +331,11 @@ struct xen_mc {
};
DEFINE_GUEST_HANDLE_STRUCT(xen_mc);
/* Fields are zero when not available */
/*
* Fields are zero when not available. Also, this struct is shared with
* userspace mcelog and thus must keep existing fields at current offsets.
* Only add new fields to the end of the structure
*/
struct xen_mce {
__u64 status;
__u64 misc;
@ -353,6 +356,9 @@ struct xen_mce {
__u32 socketid; /* CPU socket ID */
__u32 apicid; /* CPU initial apic ID */
__u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
__u64 synd; /* MCA_SYND MSR: only valid on SMCA systems */
__u64 ipid; /* MCA_IPID MSR: only valid on SMCA systems */
__u64 ppin; /* Protected Processor Inventory Number */
};
/*