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KVM: x86: properly update ready_for_interrupt_injection 

The recent changes to emulate string instructions without entering guest
mode exposed a bug where pending interrupts are not properly reflected
in ready_for_interrupt_injection.

The result is that userspace overwrites a previously queued interrupt,
when irqchip's are emulated in userspace.

Fix by always updating state before returning to userspace.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2010-05-03 23:04:27 -03:00 committed by Avi Kivity
parent 84ad33ef5d
commit f1d86e469b
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kvm/x86.c
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@ -4653,7 +4653,6 @@ static int __vcpu_run(struct kvm_vcpu *vcpu)
}
srcu_read_unlock(&kvm->srcu, vcpu->srcu_idx);
post_kvm_run_save(vcpu);
vapic_exit(vcpu);
@ -4703,6 +4702,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
r = __vcpu_run(vcpu);
out:
post_kvm_run_save(vcpu);
if (vcpu->sigset_active)
sigprocmask(SIG_SETMASK, &sigsaved, NULL);