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kvm/x86: Hyper-V synthetic interrupt controller 

SynIC (synthetic interrupt controller) is a lapic extension,
which is controlled via MSRs and maintains for each vCPU
 - 16 synthetic interrupt "lines" (SINT's); each can be configured to
   trigger a specific interrupt vector optionally with auto-EOI
   semantics
 - a message page in the guest memory with 16 256-byte per-SINT message
   slots
 - an event flag page in the guest memory with 16 2048-bit per-SINT
   event flag areas

The host triggers a SINT whenever it delivers a new message to the
corresponding slot or flips an event flag bit in the corresponding area.
The guest informs the host that it can try delivering a message by
explicitly asserting EOI in lapic or writing to End-Of-Message (EOM)
MSR.

The userspace (qemu) triggers interrupts and receives EOM notifications
via irqfd with resampler; for that, a GSI is allocated for each
configured SINT, and irq_routing api is extended to support GSI-SINT
mapping.

Changes v4:
* added activation of SynIC by vcpu KVM_ENABLE_CAP
* added per SynIC active flag
* added deactivation of APICv upon SynIC activation

Changes v3:
* added KVM_CAP_HYPERV_SYNIC and KVM_IRQ_ROUTING_HV_SINT notes into
docs

Changes v2:
* do not use posted interrupts for Hyper-V SynIC AutoEOI vectors
* add Hyper-V SynIC vectors into EOI exit bitmap
* Hyper-V SyniIC SINT msr write logic simplified

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Reviewed-by: Roman Kagan <rkagan@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Gleb Natapov <gleb@kernel.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Roman Kagan <rkagan@virtuozzo.com>
CC: Denis V. Lunev <den@openvz.org>
CC: qemu-devel@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
hifive-unleashed-5.1
Andrey Smetanin 2015-11-10 15:36:34 +03:00 committed by Paolo Bonzini
parent d62caabb41
commit 5c919412fe
10 changed files with 467 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
Documentation/virtual/kvm/api.txt
View File

@ -1451,6 +1451,7 @@ struct kvm_irq_routing_entry {
struct kvm_irq_routing_irqchip irqchip;
struct kvm_irq_routing_msi msi;
struct kvm_irq_routing_s390_adapter adapter;
struct kvm_irq_routing_hv_sint hv_sint;
__u32 pad[8];
} u;
};
@ -1459,6 +1460,7 @@ struct kvm_irq_routing_entry {
#define KVM_IRQ_ROUTING_IRQCHIP 1
#define KVM_IRQ_ROUTING_MSI 2
#define KVM_IRQ_ROUTING_S390_ADAPTER 3
#define KVM_IRQ_ROUTING_HV_SINT 4
No flags are specified so far, the corresponding field must be set to zero.
@ -1482,6 +1484,10 @@ struct kvm_irq_routing_s390_adapter {
__u32 adapter_id;
};
struct kvm_irq_routing_hv_sint {
__u32 vcpu;
__u32 sint;
};
4.53 KVM_ASSIGN_SET_MSIX_NR (deprecated)
@ -3685,3 +3691,16 @@ available, means that that the kernel has an implementation of the
H_RANDOM hypercall backed by a hardware random-number generator.
If present, the kernel H_RANDOM handler can be enabled for guest use
with the KVM_CAP_PPC_ENABLE_HCALL capability.
8.2 KVM_CAP_HYPERV_SYNIC
Architectures: x86
This capability, if KVM_CHECK_EXTENSION indicates that it is
available, means that that the kernel has an implementation of the
Hyper-V Synthetic interrupt controller(SynIC). Hyper-V SynIC is
used to support Windows Hyper-V based guest paravirt drivers(VMBus).
In order to use SynIC, it has to be activated by setting this
capability via KVM_ENABLE_CAP ioctl on the vcpu fd. Note that this
will disable the use of APIC hardware virtualization even if supported
by the CPU, as it's incompatible with SynIC auto-EOI behavior.

15
arch/x86/include/asm/kvm_host.h
View File

@ -25,6 +25,7 @@
#include <linux/pvclock_gtod.h>
#include <linux/clocksource.h>
#include <linux/irqbypass.h>
#include <linux/hyperv.h>
#include <asm/pvclock-abi.h>
#include <asm/desc.h>
@ -374,10 +375,24 @@ struct kvm_mtrr {
struct list_head head;
};
/* Hyper-V synthetic interrupt controller (SynIC)*/
struct kvm_vcpu_hv_synic {
u64 version;
u64 control;
u64 msg_page;
u64 evt_page;
atomic64_t sint[HV_SYNIC_SINT_COUNT];
atomic_t sint_to_gsi[HV_SYNIC_SINT_COUNT];
DECLARE_BITMAP(auto_eoi_bitmap, 256);
DECLARE_BITMAP(vec_bitmap, 256);
bool active;
};
/* Hyper-V per vcpu emulation context */
struct kvm_vcpu_hv {
u64 hv_vapic;
s64 runtime_offset;
struct kvm_vcpu_hv_synic synic;
};
struct kvm_vcpu_arch {

315
arch/x86/kvm/hyperv.c
View File

@ -23,13 +23,314 @@
#include "x86.h"
#include "lapic.h"
#include "ioapic.h"
#include "hyperv.h"
#include <linux/kvm_host.h>
#include <asm/apicdef.h>
#include <trace/events/kvm.h>
#include "trace.h"
static inline u64 synic_read_sint(struct kvm_vcpu_hv_synic *synic, int sint)
{
return atomic64_read(&synic->sint[sint]);
}
static inline int synic_get_sint_vector(u64 sint_value)
{
if (sint_value & HV_SYNIC_SINT_MASKED)
return -1;
return sint_value & HV_SYNIC_SINT_VECTOR_MASK;
}
static bool synic_has_vector_connected(struct kvm_vcpu_hv_synic *synic,
int vector)
{
int i;
for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {
if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)
return true;
}
return false;
}
static bool synic_has_vector_auto_eoi(struct kvm_vcpu_hv_synic *synic,
int vector)
{
int i;
u64 sint_value;
for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {
sint_value = synic_read_sint(synic, i);
if (synic_get_sint_vector(sint_value) == vector &&
sint_value & HV_SYNIC_SINT_AUTO_EOI)
return true;
}
return false;
}
static int synic_set_sint(struct kvm_vcpu_hv_synic *synic, int sint, u64 data)
{
int vector;
vector = data & HV_SYNIC_SINT_VECTOR_MASK;
if (vector < 16)
return 1;
/*
* Guest may configure multiple SINTs to use the same vector, so
* we maintain a bitmap of vectors handled by synic, and a
* bitmap of vectors with auto-eoi behavior. The bitmaps are
* updated here, and atomically queried on fast paths.
*/
atomic64_set(&synic->sint[sint], data);
if (synic_has_vector_connected(synic, vector))
__set_bit(vector, synic->vec_bitmap);
else
__clear_bit(vector, synic->vec_bitmap);
if (synic_has_vector_auto_eoi(synic, vector))
__set_bit(vector, synic->auto_eoi_bitmap);
else
__clear_bit(vector, synic->auto_eoi_bitmap);
/* Load SynIC vectors into EOI exit bitmap */
kvm_make_request(KVM_REQ_SCAN_IOAPIC, synic_to_vcpu(synic));
return 0;
}
static struct kvm_vcpu_hv_synic *synic_get(struct kvm *kvm, u32 vcpu_id)
{
struct kvm_vcpu *vcpu;
struct kvm_vcpu_hv_synic *synic;
if (vcpu_id >= atomic_read(&kvm->online_vcpus))
return NULL;
vcpu = kvm_get_vcpu(kvm, vcpu_id);
if (!vcpu)
return NULL;
synic = vcpu_to_synic(vcpu);
return (synic->active) ? synic : NULL;
}
static void kvm_hv_notify_acked_sint(struct kvm_vcpu *vcpu, u32 sint)
{
struct kvm *kvm = vcpu->kvm;
int gsi, idx;
vcpu_debug(vcpu, "Hyper-V SynIC acked sint %d\n", sint);
idx = srcu_read_lock(&kvm->irq_srcu);
gsi = atomic_read(&vcpu_to_synic(vcpu)->sint_to_gsi[sint]);
if (gsi != -1)
kvm_notify_acked_gsi(kvm, gsi);
srcu_read_unlock(&kvm->irq_srcu, idx);
}
static int synic_set_msr(struct kvm_vcpu_hv_synic *synic,
u32 msr, u64 data, bool host)
{
struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
int ret;
if (!synic->active)
return 1;
vcpu_debug(vcpu, "Hyper-V SynIC set msr 0x%x 0x%llx host %d\n",
msr, data, host);
ret = 0;
switch (msr) {
case HV_X64_MSR_SCONTROL:
synic->control = data;
break;
case HV_X64_MSR_SVERSION:
if (!host) {
ret = 1;
break;
}
synic->version = data;
break;
case HV_X64_MSR_SIEFP:
if (data & HV_SYNIC_SIEFP_ENABLE)
if (kvm_clear_guest(vcpu->kvm,
data & PAGE_MASK, PAGE_SIZE)) {
ret = 1;
break;
}
synic->evt_page = data;
break;
case HV_X64_MSR_SIMP:
if (data & HV_SYNIC_SIMP_ENABLE)
if (kvm_clear_guest(vcpu->kvm,
data & PAGE_MASK, PAGE_SIZE)) {
ret = 1;
break;
}
synic->msg_page = data;
break;
case HV_X64_MSR_EOM: {
int i;
for (i = 0; i < ARRAY_SIZE(synic->sint); i++)
kvm_hv_notify_acked_sint(vcpu, i);
break;
}
case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15:
ret = synic_set_sint(synic, msr - HV_X64_MSR_SINT0, data);
break;
default:
ret = 1;
break;
}
return ret;
}
static int synic_get_msr(struct kvm_vcpu_hv_synic *synic, u32 msr, u64 *pdata)
{
int ret;
if (!synic->active)
return 1;
ret = 0;
switch (msr) {
case HV_X64_MSR_SCONTROL:
*pdata = synic->control;
break;
case HV_X64_MSR_SVERSION:
*pdata = synic->version;
break;
case HV_X64_MSR_SIEFP:
*pdata = synic->evt_page;
break;
case HV_X64_MSR_SIMP:
*pdata = synic->msg_page;
break;
case HV_X64_MSR_EOM:
*pdata = 0;
break;
case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15:
*pdata = atomic64_read(&synic->sint[msr - HV_X64_MSR_SINT0]);
break;
default:
ret = 1;
break;
}
return ret;
}
int synic_set_irq(struct kvm_vcpu_hv_synic *synic, u32 sint)
{
struct kvm_vcpu *vcpu = synic_to_vcpu(synic);
struct kvm_lapic_irq irq;
int ret, vector;
if (sint >= ARRAY_SIZE(synic->sint))
return -EINVAL;
vector = synic_get_sint_vector(synic_read_sint(synic, sint));
if (vector < 0)
return -ENOENT;
memset(&irq, 0, sizeof(irq));
irq.dest_id = kvm_apic_id(vcpu->arch.apic);
irq.dest_mode = APIC_DEST_PHYSICAL;
irq.delivery_mode = APIC_DM_FIXED;
irq.vector = vector;
irq.level = 1;
ret = kvm_irq_delivery_to_apic(vcpu->kvm, NULL, &irq, NULL);
vcpu_debug(vcpu, "Hyper-V SynIC set irq ret %d\n", ret);
return ret;
}
int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint)
{
struct kvm_vcpu_hv_synic *synic;
synic = synic_get(kvm, vcpu_id);
if (!synic)
return -EINVAL;
return synic_set_irq(synic, sint);
}
void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector)
{
struct kvm_vcpu_hv_synic *synic = vcpu_to_synic(vcpu);
int i;
vcpu_debug(vcpu, "Hyper-V SynIC send eoi vec %d\n", vector);
for (i = 0; i < ARRAY_SIZE(synic->sint); i++)
if (synic_get_sint_vector(synic_read_sint(synic, i)) == vector)
kvm_hv_notify_acked_sint(vcpu, i);
}
static int kvm_hv_set_sint_gsi(struct kvm *kvm, u32 vcpu_id, u32 sint, int gsi)
{
struct kvm_vcpu_hv_synic *synic;
synic = synic_get(kvm, vcpu_id);
if (!synic)
return -EINVAL;
if (sint >= ARRAY_SIZE(synic->sint_to_gsi))
return -EINVAL;
atomic_set(&synic->sint_to_gsi[sint], gsi);
return 0;
}
void kvm_hv_irq_routing_update(struct kvm *kvm)
{
struct kvm_irq_routing_table *irq_rt;
struct kvm_kernel_irq_routing_entry *e;
u32 gsi;
irq_rt = srcu_dereference_check(kvm->irq_routing, &kvm->irq_srcu,
lockdep_is_held(&kvm->irq_lock));
for (gsi = 0; gsi < irq_rt->nr_rt_entries; gsi++) {
hlist_for_each_entry(e, &irq_rt->map[gsi], link) {
if (e->type == KVM_IRQ_ROUTING_HV_SINT)
kvm_hv_set_sint_gsi(kvm, e->hv_sint.vcpu,
e->hv_sint.sint, gsi);
}
}
}
static void synic_init(struct kvm_vcpu_hv_synic *synic)
{
int i;
memset(synic, 0, sizeof(*synic));
synic->version = HV_SYNIC_VERSION_1;
for (i = 0; i < ARRAY_SIZE(synic->sint); i++) {
atomic64_set(&synic->sint[i], HV_SYNIC_SINT_MASKED);
atomic_set(&synic->sint_to_gsi[i], -1);
}
}
void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu)
{
synic_init(vcpu_to_synic(vcpu));
}
int kvm_hv_activate_synic(struct kvm_vcpu *vcpu)
{
/*
* Hyper-V SynIC auto EOI SINT's are
* not compatible with APICV, so deactivate APICV
*/
kvm_vcpu_deactivate_apicv(vcpu);
vcpu_to_synic(vcpu)->active = true;
return 0;
}
static bool kvm_hv_msr_partition_wide(u32 msr)
{
bool r = false;
@ -226,6 +527,13 @@ static int kvm_hv_set_msr(struct kvm_vcpu *vcpu, u32 msr, u64 data, bool host)
return 1;
hv->runtime_offset = data - current_task_runtime_100ns();
break;
case HV_X64_MSR_SCONTROL:
case HV_X64_MSR_SVERSION:
case HV_X64_MSR_SIEFP:
case HV_X64_MSR_SIMP:
case HV_X64_MSR_EOM:
case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15:
return synic_set_msr(vcpu_to_synic(vcpu), msr, data, host);
default:
vcpu_unimpl(vcpu, "Hyper-V uhandled wrmsr: 0x%x data 0x%llx\n",
msr, data);
@ -304,6 +612,13 @@ static int kvm_hv_get_msr(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case HV_X64_MSR_VP_RUNTIME:
data = current_task_runtime_100ns() + hv->runtime_offset;
break;
case HV_X64_MSR_SCONTROL:
case HV_X64_MSR_SVERSION:
case HV_X64_MSR_SIEFP:
case HV_X64_MSR_SIMP:
case HV_X64_MSR_EOM:
case HV_X64_MSR_SINT0 ... HV_X64_MSR_SINT15:
return synic_get_msr(vcpu_to_synic(vcpu), msr, pdata);
default:
vcpu_unimpl(vcpu, "Hyper-V unhandled rdmsr: 0x%x\n", msr);
return 1;

23
arch/x86/kvm/hyperv.h
View File

@ -29,4 +29,27 @@ int kvm_hv_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata);
bool kvm_hv_hypercall_enabled(struct kvm *kvm);
int kvm_hv_hypercall(struct kvm_vcpu *vcpu);
int kvm_hv_synic_set_irq(struct kvm *kvm, u32 vcpu_id, u32 sint);
void kvm_hv_synic_send_eoi(struct kvm_vcpu *vcpu, int vector);
static inline struct kvm_vcpu_hv_synic *vcpu_to_synic(struct kvm_vcpu *vcpu)
{
return &vcpu->arch.hyperv.synic;
}
static inline struct kvm_vcpu *synic_to_vcpu(struct kvm_vcpu_hv_synic *synic)
{
struct kvm_vcpu_hv *hv;
struct kvm_vcpu_arch *arch;
hv = container_of(synic, struct kvm_vcpu_hv, synic);
arch = container_of(hv, struct kvm_vcpu_arch, hyperv);
return container_of(arch, struct kvm_vcpu, arch);
}
void kvm_hv_irq_routing_update(struct kvm *kvm);
void kvm_hv_vcpu_init(struct kvm_vcpu *vcpu);
int kvm_hv_activate_synic(struct kvm_vcpu *vcpu);
#endif

34
arch/x86/kvm/irq_comm.c
View File

@ -33,6 +33,8 @@
#include "lapic.h"
#include "hyperv.h"
static int kvm_set_pic_irq(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id, int level,
bool line_status)
@ -219,6 +221,16 @@ void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
srcu_read_unlock(&kvm->irq_srcu, idx);
}
static int kvm_hv_set_sint(struct kvm_kernel_irq_routing_entry *e,
struct kvm *kvm, int irq_source_id, int level,
bool line_status)
{
if (!level)
return -1;
return kvm_hv_synic_set_irq(kvm, e->hv_sint.vcpu, e->hv_sint.sint);
}
int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
const struct kvm_irq_routing_entry *ue)
{
@ -257,6 +269,11 @@ int kvm_set_routing_entry(struct kvm_kernel_irq_routing_entry *e,
e->msi.address_hi = ue->u.msi.address_hi;
e->msi.data = ue->u.msi.data;
break;
case KVM_IRQ_ROUTING_HV_SINT:
e->set = kvm_hv_set_sint;
e->hv_sint.vcpu = ue->u.hv_sint.vcpu;
e->hv_sint.sint = ue->u.hv_sint.sint;
break;
default:
goto out;
}
@ -376,3 +393,20 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
}
srcu_read_unlock(&kvm->irq_srcu, idx);
}
int kvm_arch_set_irq(struct kvm_kernel_irq_routing_entry *irq, struct kvm *kvm,
int irq_source_id, int level, bool line_status)
{
switch (irq->type) {
case KVM_IRQ_ROUTING_HV_SINT:
return kvm_hv_set_sint(irq, kvm, irq_source_id, level,
line_status);
default:
return -EWOULDBLOCK;
}
}
void kvm_arch_irq_routing_update(struct kvm *kvm)
{
kvm_hv_irq_routing_update(kvm);
}

15
arch/x86/kvm/lapic.c
View File

@ -41,6 +41,7 @@
#include "trace.h"
#include "x86.h"
#include "cpuid.h"
#include "hyperv.h"
#ifndef CONFIG_X86_64
#define mod_64(x, y) ((x) - (y) * div64_u64(x, y))
@ -128,11 +129,6 @@ static inline int apic_enabled(struct kvm_lapic *apic)
(LVT_MASK | APIC_MODE_MASK | APIC_INPUT_POLARITY | \
APIC_LVT_REMOTE_IRR | APIC_LVT_LEVEL_TRIGGER)
static inline int kvm_apic_id(struct kvm_lapic *apic)
{
return (kvm_apic_get_reg(apic, APIC_ID) >> 24) & 0xff;
}
/* The logical map is definitely wrong if we have multiple
* modes at the same time. (Physical map is always right.)
*/
@ -975,6 +971,9 @@ static int apic_set_eoi(struct kvm_lapic *apic)
apic_clear_isr(vector, apic);
apic_update_ppr(apic);
if (test_bit(vector, vcpu_to_synic(apic->vcpu)->vec_bitmap))
kvm_hv_synic_send_eoi(apic->vcpu, vector);
kvm_ioapic_send_eoi(apic, vector);
kvm_make_request(KVM_REQ_EVENT, apic->vcpu);
return vector;
@ -1884,6 +1883,12 @@ int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu)
apic_set_isr(vector, apic);
apic_update_ppr(apic);
apic_clear_irr(vector, apic);
if (test_bit(vector, vcpu_to_synic(vcpu)->auto_eoi_bitmap)) {
apic_clear_isr(vector, apic);
apic_update_ppr(apic);
}
return vector;
}

5
arch/x86/kvm/lapic.h
View File

@ -164,6 +164,11 @@ static inline int kvm_lapic_latched_init(struct kvm_vcpu *vcpu)
return kvm_vcpu_has_lapic(vcpu) && test_bit(KVM_APIC_INIT, &vcpu->arch.apic->pending_events);
}
static inline int kvm_apic_id(struct kvm_lapic *apic)
{
return (kvm_apic_get_reg(apic, APIC_ID) >> 24) & 0xff;
}
bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector);
void wait_lapic_expire(struct kvm_vcpu *vcpu);

34
arch/x86/kvm/x86.c
View File

@ -966,6 +966,7 @@ static u32 emulated_msrs[] = {
HV_X64_MSR_RESET,
HV_X64_MSR_VP_INDEX,
HV_X64_MSR_VP_RUNTIME,
HV_X64_MSR_SCONTROL,
HV_X64_MSR_APIC_ASSIST_PAGE, MSR_KVM_ASYNC_PF_EN, MSR_KVM_STEAL_TIME,
MSR_KVM_PV_EOI_EN,
@ -2541,6 +2542,7 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
case KVM_CAP_HYPERV:
case KVM_CAP_HYPERV_VAPIC:
case KVM_CAP_HYPERV_SPIN:
case KVM_CAP_HYPERV_SYNIC:
case KVM_CAP_PCI_SEGMENT:
case KVM_CAP_DEBUGREGS:
case KVM_CAP_X86_ROBUST_SINGLESTEP:
@ -3193,6 +3195,20 @@ static int kvm_set_guest_paused(struct kvm_vcpu *vcpu)
return 0;
}
static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu,
struct kvm_enable_cap *cap)
{
if (cap->flags)
return -EINVAL;
switch (cap->cap) {
case KVM_CAP_HYPERV_SYNIC:
return kvm_hv_activate_synic(vcpu);
default:
return -EINVAL;
}
}
long kvm_arch_vcpu_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg)
{
@ -3457,6 +3473,15 @@ long kvm_arch_vcpu_ioctl(struct file *filp,
r = kvm_set_guest_paused(vcpu);
goto out;
}
case KVM_ENABLE_CAP: {
struct kvm_enable_cap cap;
r = -EFAULT;
if (copy_from_user(&cap, argp, sizeof(cap)))
goto out;
r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap);
break;
}
default:
r = -EINVAL;
}
@ -6309,6 +6334,8 @@ static void process_smi(struct kvm_vcpu *vcpu)
static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu)
{
u64 eoi_exit_bitmap[4];
if (!kvm_apic_hw_enabled(vcpu->arch.apic))
return;
@ -6321,8 +6348,9 @@ static void vcpu_scan_ioapic(struct kvm_vcpu *vcpu)
kvm_x86_ops->sync_pir_to_irr(vcpu);
kvm_ioapic_scan_entry(vcpu, vcpu->arch.ioapic_handled_vectors);
}
kvm_x86_ops->load_eoi_exitmap(vcpu,
(u64 *)vcpu->arch.ioapic_handled_vectors);
bitmap_or((ulong *)eoi_exit_bitmap, vcpu->arch.ioapic_handled_vectors,
vcpu_to_synic(vcpu)->vec_bitmap, 256);
kvm_x86_ops->load_eoi_exitmap(vcpu, eoi_exit_bitmap);
}
static void kvm_vcpu_flush_tlb(struct kvm_vcpu *vcpu)
@ -7594,6 +7622,8 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
vcpu->arch.pending_external_vector = -1;
kvm_hv_vcpu_init(vcpu);
return 0;
fail_free_mce_banks:

6
include/linux/kvm_host.h
View File

@ -318,6 +318,11 @@ struct kvm_s390_adapter_int {
u32 adapter_id;
};
struct kvm_hv_sint {
u32 vcpu;
u32 sint;
};
struct kvm_kernel_irq_routing_entry {
u32 gsi;
u32 type;
@ -331,6 +336,7 @@ struct kvm_kernel_irq_routing_entry {
} irqchip;
struct msi_msg msi;
struct kvm_s390_adapter_int adapter;
struct kvm_hv_sint hv_sint;
};
struct hlist_node link;
};

8
include/uapi/linux/kvm.h
View File

@ -831,6 +831,7 @@ struct kvm_ppc_smmu_info {
#define KVM_CAP_GUEST_DEBUG_HW_WPS 120
#define KVM_CAP_SPLIT_IRQCHIP 121
#define KVM_CAP_IOEVENTFD_ANY_LENGTH 122
#define KVM_CAP_HYPERV_SYNIC 123
#ifdef KVM_CAP_IRQ_ROUTING
@ -854,10 +855,16 @@ struct kvm_irq_routing_s390_adapter {
__u32 adapter_id;
};
struct kvm_irq_routing_hv_sint {
__u32 vcpu;
__u32 sint;
};
/* gsi routing entry types */
#define KVM_IRQ_ROUTING_IRQCHIP 1
#define KVM_IRQ_ROUTING_MSI 2
#define KVM_IRQ_ROUTING_S390_ADAPTER 3
#define KVM_IRQ_ROUTING_HV_SINT 4
struct kvm_irq_routing_entry {
__u32 gsi;
@ -868,6 +875,7 @@ struct kvm_irq_routing_entry {
struct kvm_irq_routing_irqchip irqchip;
struct kvm_irq_routing_msi msi;
struct kvm_irq_routing_s390_adapter adapter;
struct kvm_irq_routing_hv_sint hv_sint;
__u32 pad[8];
} u;
};