diff options
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 858432287ab..93c15743f1e 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -92,6 +92,11 @@ static inline int apic_test_and_clear_vector(int vec, void *bitmap) return test_and_clear_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); } +static inline int apic_test_vector(int vec, void *bitmap) +{ + return test_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); +} + static inline void apic_set_vector(int vec, void *bitmap) { set_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); @@ -480,7 +485,6 @@ int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2) static void apic_set_eoi(struct kvm_lapic *apic) { int vector = apic_find_highest_isr(apic); - int trigger_mode; /* * Not every write EOI will has corresponding ISR, * one example is when Kernel check timer on setup_IO_APIC @@ -491,12 +495,15 @@ static void apic_set_eoi(struct kvm_lapic *apic) apic_clear_vector(vector, apic->regs + APIC_ISR); apic_update_ppr(apic); - if (apic_test_and_clear_vector(vector, apic->regs + APIC_TMR)) - trigger_mode = IOAPIC_LEVEL_TRIG; - else - trigger_mode = IOAPIC_EDGE_TRIG; - if (!(apic_get_reg(apic, APIC_SPIV) & APIC_SPIV_DIRECTED_EOI)) + if (!(apic_get_reg(apic, APIC_SPIV) & APIC_SPIV_DIRECTED_EOI) && + kvm_ioapic_handles_vector(apic->vcpu->kvm, vector)) { + int trigger_mode; + if (apic_test_vector(vector, apic->regs + APIC_TMR)) + trigger_mode = IOAPIC_LEVEL_TRIG; + else + trigger_mode = IOAPIC_EDGE_TRIG; kvm_ioapic_update_eoi(apic->vcpu->kvm, vector, trigger_mode); + } kvm_make_request(KVM_REQ_EVENT, apic->vcpu); } @@ -1081,6 +1088,7 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu) apic_update_ppr(apic); vcpu->arch.apic_arb_prio = 0; + vcpu->arch.apic_attention = 0; apic_debug(KERN_INFO "%s: vcpu=%p, id=%d, base_msr=" "0x%016" PRIx64 ", base_address=0x%0lx.\n", __func__, @@ -1280,7 +1288,7 @@ void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu) u32 data; void *vapic; - if (!irqchip_in_kernel(vcpu->kvm) || !vcpu->arch.apic->vapic_addr) + if (!test_bit(KVM_APIC_CHECK_VAPIC, &vcpu->arch.apic_attention)) return; vapic = kmap_atomic(vcpu->arch.apic->vapic_page); @@ -1297,7 +1305,7 @@ void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu) struct kvm_lapic *apic; void *vapic; - if (!irqchip_in_kernel(vcpu->kvm) || !vcpu->arch.apic->vapic_addr) + if (!test_bit(KVM_APIC_CHECK_VAPIC, &vcpu->arch.apic_attention)) return; apic = vcpu->arch.apic; @@ -1317,10 +1325,11 @@ void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu) void kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr) { - if (!irqchip_in_kernel(vcpu->kvm)) - return; - vcpu->arch.apic->vapic_addr = vapic_addr; + if (vapic_addr) + __set_bit(KVM_APIC_CHECK_VAPIC, &vcpu->arch.apic_attention); + else + __clear_bit(KVM_APIC_CHECK_VAPIC, &vcpu->arch.apic_attention); } int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data) |