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-rw-r--r--arch/x86/include/asm/kvm_host.h2
-rw-r--r--arch/x86/kvm/irq.c2
-rw-r--r--arch/x86/kvm/vmx/vmx.c11
3 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index c3906fb2b93f..a3ce391c9e7a 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1247,6 +1247,8 @@ struct kvm_x86_ops {
bool (*apic_init_signal_blocked)(struct kvm_vcpu *vcpu);
int (*enable_direct_tlbflush)(struct kvm_vcpu *vcpu);
+
+ void (*migrate_timers)(struct kvm_vcpu *vcpu);
};
struct kvm_x86_nested_ops {
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index e330e7d125f7..54f7ea68083b 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -159,6 +159,8 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
{
__kvm_migrate_apic_timer(vcpu);
__kvm_migrate_pit_timer(vcpu);
+ if (kvm_x86_ops.migrate_timers)
+ kvm_x86_ops.migrate_timers(vcpu);
}
bool kvm_arch_irqfd_allowed(struct kvm *kvm, struct kvm_irqfd *args)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 68f4efb2b9c2..6a03c27ff314 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -7814,6 +7814,16 @@ static bool vmx_apic_init_signal_blocked(struct kvm_vcpu *vcpu)
return to_vmx(vcpu)->nested.vmxon;
}
+static void vmx_migrate_timers(struct kvm_vcpu *vcpu)
+{
+ if (is_guest_mode(vcpu)) {
+ struct hrtimer *timer = &to_vmx(vcpu)->nested.preemption_timer;
+
+ if (hrtimer_try_to_cancel(timer) == 1)
+ hrtimer_start_expires(timer, HRTIMER_MODE_ABS_PINNED);
+ }
+}
+
static void hardware_unsetup(void)
{
if (nested)
@@ -7957,6 +7967,7 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = {
.need_emulation_on_page_fault = vmx_need_emulation_on_page_fault,
.apic_init_signal_blocked = vmx_apic_init_signal_blocked,
+ .migrate_timers = vmx_migrate_timers,
};
static __init int hardware_setup(void)

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