[PATCH 37/45] KVM: Do not allow interrupt injection from userspace if there is a pending event.

[Avi Kivity]

From: Gleb Natapov <gleb@xxxxxxxxxx>

The exception will immediately close the interrupt window.

Signed-off-by: Gleb Natapov <gleb@xxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
 arch/x86/kvm/x86.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 33f850b..d9396a7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3101,8 +3101,9 @@ static void post_kvm_run_save(struct kvm_vcpu *vcpu,
 		kvm_run->ready_for_interrupt_injection = 1;
 	else
 		kvm_run->ready_for_interrupt_injection =
-					(kvm_arch_interrupt_allowed(vcpu) &&
-					 !kvm_cpu_has_interrupt(vcpu));
+			kvm_arch_interrupt_allowed(vcpu) &&
+			!kvm_cpu_has_interrupt(vcpu) &&
+			!kvm_event_needs_reinjection(vcpu);
 }
 
 static void vapic_enter(struct kvm_vcpu *vcpu)
-- 
1.6.0.6

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