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authorAvi Kivity <avi@redhat.com>2008-11-23 18:08:57 +0200
committerAvi Kivity <avi@redhat.com>2008-12-31 16:55:00 +0200
commitdf203ec9a77a7236cb90456664d714423b98a977 (patch)
treefc86d8072405aa5c196880fc0b328dacbd8d3a6e
parent8fe0736763a07fbea56213ea105a0c2ee098e6fc (diff)
downloadop-kernel-dev-df203ec9a77a7236cb90456664d714423b98a977.zip
op-kernel-dev-df203ec9a77a7236cb90456664d714423b98a977.tar.gz
KVM: VMX: Conditionally request interrupt window after injecting irq
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>
-rw-r--r--arch/x86/kvm/vmx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f5958a7..7ea4855 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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);
}
}
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