[PATCH 3/3] KVM: LAPIC: Ignore timer migration when lapic timer is injected by posted-interrupt

From: Wanpeng Li
Date: Wed Jun 05 2019 - 06:13:35 EST


From: Wanpeng Li <wanpengli@xxxxxxxxxxx>

When lapic timer is injected by posted-interrupt, the emulated timer is
offload to the housekeeping cpu. The timer interrupt will be delivered
properly, no need to migrate timer.

Cc: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Cc: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>
Signed-off-by: Wanpeng Li <wanpengli@xxxxxxxxxxx>
---
arch/x86/kvm/lapic.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index e9db086..3bb4376 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2534,7 +2534,8 @@ void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)
{
struct hrtimer *timer;

- if (!lapic_in_kernel(vcpu))
+ if (!lapic_in_kernel(vcpu) ||
+ posted_interrupt_inject_timer(vcpu))
return;

timer = &vcpu->arch.apic->lapic_timer.timer;
--
2.7.4