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KVM: x86: Introducing kvm_x86_ops.apicv_post_state_restore

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Adding kvm_x86_ops hooks to allow APICv to do post state restore.
This is required to support VM save and restore feature.

Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Suravee Suthikulpanit 2016-05-04 14:09:49 -05:00 committed by Paolo Bonzini
parent 18f40c53e1
commit be8ca170ed
3 changed files with 13 additions and 0 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -1004,6 +1004,7 @@ struct kvm_x86_ops {
int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq, int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq,
uint32_t guest_irq, bool set); uint32_t guest_irq, bool set);
void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu);
}; };
struct kvm_arch_async_pf { struct kvm_arch_async_pf {

2
arch/x86/kvm/lapic.c
View File

@ -1961,6 +1961,8 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu,
1 : count_vectors(apic->regs + APIC_ISR); 1 : count_vectors(apic->regs + APIC_ISR);
apic->highest_isr_cache = -1; apic->highest_isr_cache = -1;
if (vcpu->arch.apicv_active) { if (vcpu->arch.apicv_active) {
if (kvm_x86_ops->apicv_post_state_restore)
kvm_x86_ops->apicv_post_state_restore(vcpu);
kvm_x86_ops->hwapic_irr_update(vcpu, kvm_x86_ops->hwapic_irr_update(vcpu,
apic_find_highest_irr(apic)); apic_find_highest_irr(apic));
kvm_x86_ops->hwapic_isr_update(vcpu->kvm, kvm_x86_ops->hwapic_isr_update(vcpu->kvm,

10
arch/x86/kvm/svm.c
View File

@ -4834,6 +4834,15 @@ static void svm_sched_in(struct kvm_vcpu *vcpu, int cpu)
{ {
} }
static inline void avic_post_state_restore(struct kvm_vcpu *vcpu)
{
if (avic_handle_apic_id_update(vcpu) != 0)
return;
if (avic_handle_dfr_update(vcpu) != 0)
return;
avic_handle_ldr_update(vcpu);
}
static struct kvm_x86_ops svm_x86_ops = { static struct kvm_x86_ops svm_x86_ops = {
.cpu_has_kvm_support = has_svm, .cpu_has_kvm_support = has_svm,
.disabled_by_bios = is_disabled, .disabled_by_bios = is_disabled,
@ -4914,6 +4923,7 @@ static struct kvm_x86_ops svm_x86_ops = {
.sync_pir_to_irr = svm_sync_pir_to_irr, .sync_pir_to_irr = svm_sync_pir_to_irr,
.hwapic_irr_update = svm_hwapic_irr_update, .hwapic_irr_update = svm_hwapic_irr_update,
.hwapic_isr_update = svm_hwapic_isr_update, .hwapic_isr_update = svm_hwapic_isr_update,
.apicv_post_state_restore = avic_post_state_restore,
.set_tss_addr = svm_set_tss_addr, .set_tss_addr = svm_set_tss_addr,
.get_tdp_level = get_npt_level, .get_tdp_level = get_npt_level,