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 <[email protected]> --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/lapic.c | 2 ++ arch/x86/kvm/svm.c | 10 ++++++++++ 3 files changed, 13 insertions(+) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index a87e825..753359e 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1004,6 +1004,7 @@ struct kvm_x86_ops { int (*update_pi_irte)(struct kvm *kvm, unsigned int host_irq, uint32_t guest_irq, bool set); + void (*apicv_post_state_restore)(struct kvm_vcpu *vcpu); }; struct kvm_arch_async_pf { diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 34c28c0..539675c 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1961,6 +1961,8 @@ void kvm_apic_post_state_restore(struct kvm_vcpu *vcpu, 1 : count_vectors(apic->regs + APIC_ISR); apic->highest_isr_cache = -1; 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, apic_find_highest_irr(apic)); kvm_x86_ops->hwapic_isr_update(vcpu->kvm, diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 90b34fa..6c1d558 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -4833,6 +4833,15 @@ 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 = { .cpu_has_kvm_support = has_svm, .disabled_by_bios = is_disabled, @@ -4913,6 +4922,7 @@ static struct kvm_x86_ops svm_x86_ops = { .sync_pir_to_irr = svm_sync_pir_to_irr, .hwapic_irr_update = svm_hwapic_irr_update, .hwapic_isr_update = svm_hwapic_isr_update, + .apicv_post_state_restore = avic_post_state_restore, .set_tss_addr = svm_set_tss_addr, .get_tdp_level = get_npt_level, -- 1.9.1
