diff options
| author | Yang Zhang <yang.z.zhang@Intel.com> | 2013-04-11 11:25:16 (GMT) |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2013-04-16 19:32:41 (GMT) |
| commit | 5a71785dde307f6ac80e83c0ad3fd694912010a1 (patch) | |
| tree | cb765262ff74e583d314ef3f14b4f41a506b2cb2 /arch/x86/kvm/lapic.c | |
| parent | a20ed54d6e470bf0d28921b7aadb6ca0da0ff0c3 (diff) | |
| download | linux-5a71785dde307f6ac80e83c0ad3fd694912010a1.tar.xz | |
KVM: VMX: Use posted interrupt to deliver virtual interrupt
If posted interrupt is avaliable, then uses it to inject virtual
interrupt to guest.
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/lapic.c')
| -rw-r--r-- | arch/x86/kvm/lapic.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index dbf74c9..e29883c 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -353,6 +353,7 @@ static inline int apic_find_highest_irr(struct kvm_lapic *apic) if (!apic->irr_pending) return -1; + kvm_x86_ops->sync_pir_to_irr(apic->vcpu); result = apic_search_irr(apic); ASSERT(result == -1 || result >= 16); @@ -683,18 +684,25 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, if (dest_map) __set_bit(vcpu->vcpu_id, dest_map); - result = !apic_test_and_set_irr(vector, apic); - trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode, - trig_mode, vector, !result); - if (!result) { - if (trig_mode) - apic_debug("level trig mode repeatedly for " - "vector %d", vector); - break; - } + if (kvm_x86_ops->deliver_posted_interrupt) { + result = 1; + kvm_x86_ops->deliver_posted_interrupt(vcpu, vector); + } else { + result = !apic_test_and_set_irr(vector, apic); - kvm_make_request(KVM_REQ_EVENT, vcpu); - kvm_vcpu_kick(vcpu); + if (!result) { + if (trig_mode) + apic_debug("level trig mode repeatedly " + "for vector %d", vector); + goto out; + } + + kvm_make_request(KVM_REQ_EVENT, vcpu); + kvm_vcpu_kick(vcpu); + } +out: + trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode, + trig_mode, vector, !result); break; case APIC_DM_REMRD: |