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KVM: Fix interrupt unhalting a vcpu when it shouldn't

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kvm_vcpu_block() unhalts vpu on an interrupt/timer without checking
if interrupt window is actually opened.

Signed-off-by: Gleb Natapov <[email protected]>
Signed-off-by: Avi Kivity <[email protected]>
This commit is contained in:
Gleb Natapov 2009-03-23 12:12:11 +02:00 • committed by Avi Kivity
commit 78646121e9
9 changed files with 44 additions and 3 deletions
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3
virt/kvm/kvm_main.c
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@ -1610,7 +1610,8 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
for (;;) {
prepare_to_wait(&vcpu->wq, &wait, TASK_INTERRUPTIBLE);
if (kvm_cpu_has_interrupt(vcpu) ||
if ((kvm_arch_interrupt_allowed(vcpu) &&
kvm_cpu_has_interrupt(vcpu)) ||
kvm_arch_vcpu_runnable(vcpu)) {
set_bit(KVM_REQ_UNHALT, &vcpu->requests);
break;