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KVM: VMX: Conditionally request interrupt window after injecting irq

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If we're injecting an interrupt, and another one is pending, request
an interrupt window notification so we don't have excess latency on the
second interrupt.

This shouldn't happen in practice since an EOI will be issued, giving a second
chance to request an interrupt window, but...

Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Avi Kivity 2008-11-23 18:08:57 +02:00
parent 8fe0736763
commit df203ec9a7
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kvm/vmx.c
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@ -3304,6 +3304,8 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu)
if (vcpu->arch.interrupt.pending) {
vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
kvm_timer_intr_post(vcpu, vcpu->arch.interrupt.nr);
if (kvm_cpu_has_interrupt(vcpu))
enable_irq_window(vcpu);
}
}