diff options
| author | Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> | 2019-11-14 14:15:04 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-02-05 15:17:40 +0100 |
| commit | b26a695a1d78cc415fe26d74d0463f5d887980de (patch) | |
| tree | 348750115ef98a4e83a4b37341c0868b6fa94d47 /arch/x86 | |
| parent | e813e65038389b66d2f8dd87588694caf8dc2923 (diff) | |
kvm: lapic: Introduce APICv update helper function
Re-factor code into a helper function for setting lapic parameters when
activate/deactivate APICv, and export the function for subsequent usage.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 22 | ||||
| -rw-r--r-- | arch/x86/kvm/lapic.h | 1 |
2 files changed, 18 insertions, 5 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index cce1e6b204c8..eafc631d305c 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -2187,6 +2187,21 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value) pr_warn_once("APIC base relocation is unsupported by KVM"); } +void kvm_apic_update_apicv(struct kvm_vcpu *vcpu) +{ + struct kvm_lapic *apic = vcpu->arch.apic; + + if (vcpu->arch.apicv_active) { + /* irr_pending is always true when apicv is activated. */ + apic->irr_pending = true; + apic->isr_count = 1; + } else { + apic->irr_pending = (apic_search_irr(apic) != -1); + apic->isr_count = count_vectors(apic->regs + APIC_ISR); + } +} +EXPORT_SYMBOL_GPL(kvm_apic_update_apicv); + void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event) { struct kvm_lapic *apic = vcpu->arch.apic; @@ -2229,8 +2244,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event) kvm_lapic_set_reg(apic, APIC_ISR + 0x10 * i, 0); kvm_lapic_set_reg(apic, APIC_TMR + 0x10 * i, 0); } - apic->irr_pending = vcpu->arch.apicv_active; - apic->isr_count = vcpu->arch.apicv_active ? 1 : 0; + kvm_apic_update_apicv(vcpu); apic->highest_isr_cache = -1; update_divide_count(apic); atomic_set(&apic->lapic_timer.pending, 0); @@ -2487,9 +2501,7 @@ int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s) apic_manage_nmi_watchdog(apic, kvm_lapic_get_reg(apic, APIC_LVT0)); update_divide_count(apic); start_apic_timer(apic); - apic->irr_pending = true; - apic->isr_count = vcpu->arch.apicv_active ? - 1 : count_vectors(apic->regs + APIC_ISR); + kvm_apic_update_apicv(vcpu); apic->highest_isr_cache = -1; if (vcpu->arch.apicv_active) { kvm_x86_ops->apicv_post_state_restore(vcpu); diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h index ec730ce7a344..ec6fbfe325cf 100644 --- a/arch/x86/kvm/lapic.h +++ b/arch/x86/kvm/lapic.h @@ -91,6 +91,7 @@ void kvm_apic_update_ppr(struct kvm_vcpu *vcpu); int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq, struct dest_map *dest_map); int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type); +void kvm_apic_update_apicv(struct kvm_vcpu *vcpu); bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, struct kvm_lapic_irq *irq, int *r, struct dest_map *dest_map); |