Commit 5a71785d authored by Yang Zhang's avatar Yang Zhang Committed by Marcelo Tosatti
Browse files

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: default avatarYang Zhang <yang.z.zhang@Intel.com>
Reviewed-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent a20ed54d
...@@ -353,6 +353,7 @@ static inline int apic_find_highest_irr(struct kvm_lapic *apic) ...@@ -353,6 +353,7 @@ static inline int apic_find_highest_irr(struct kvm_lapic *apic)
if (!apic->irr_pending) if (!apic->irr_pending)
return -1; return -1;
kvm_x86_ops->sync_pir_to_irr(apic->vcpu);
result = apic_search_irr(apic); result = apic_search_irr(apic);
ASSERT(result == -1 || result >= 16); ASSERT(result == -1 || result >= 16);
...@@ -683,18 +684,25 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode, ...@@ -683,18 +684,25 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
if (dest_map) if (dest_map)
__set_bit(vcpu->vcpu_id, dest_map); __set_bit(vcpu->vcpu_id, dest_map);
result = !apic_test_and_set_irr(vector, apic); if (kvm_x86_ops->deliver_posted_interrupt) {
trace_kvm_apic_accept_irq(vcpu->vcpu_id, delivery_mode, result = 1;
trig_mode, vector, !result); kvm_x86_ops->deliver_posted_interrupt(vcpu, vector);
if (!result) { } else {
if (trig_mode) result = !apic_test_and_set_irr(vector, apic);
apic_debug("level trig mode repeatedly for "
"vector %d", vector);
break;
}
kvm_make_request(KVM_REQ_EVENT, vcpu); if (!result) {
kvm_vcpu_kick(vcpu); 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; break;
case APIC_DM_REMRD: case APIC_DM_REMRD:
......
...@@ -84,7 +84,7 @@ module_param(vmm_exclusive, bool, S_IRUGO); ...@@ -84,7 +84,7 @@ module_param(vmm_exclusive, bool, S_IRUGO);
static bool __read_mostly fasteoi = 1; static bool __read_mostly fasteoi = 1;
module_param(fasteoi, bool, S_IRUGO); module_param(fasteoi, bool, S_IRUGO);
static bool __read_mostly enable_apicv; static bool __read_mostly enable_apicv = 1;
module_param(enable_apicv, bool, S_IRUGO); module_param(enable_apicv, bool, S_IRUGO);
/* /*
......
...@@ -2692,6 +2692,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) ...@@ -2692,6 +2692,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
static int kvm_vcpu_ioctl_get_lapic(struct kvm_vcpu *vcpu, static int kvm_vcpu_ioctl_get_lapic(struct kvm_vcpu *vcpu,
struct kvm_lapic_state *s) struct kvm_lapic_state *s)
{ {
kvm_x86_ops->sync_pir_to_irr(vcpu);
memcpy(s->regs, vcpu->arch.apic->regs, sizeof *s); memcpy(s->regs, vcpu->arch.apic->regs, sizeof *s);
return 0; return 0;
......
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