KVM: SVM: check for nested VINTR flag in svm_interrupt_allowed

Not checking for this flag breaks any nested hypervisor that does not set VINTR. So fix it with this patch. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Avi Kivity <avi@redhat.com>
mariux64 · Sep 10, 2009 · 108768d · 108768d
1 parent 2666695
commit 108768d
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
@@ -2463,7 +2463,7 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
 	return (vmcb->save.rflags & X86_EFLAGS_IF) &&
 		!(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
 		gif_set(svm) &&
-		!is_nested(svm);
+		!(is_nested(svm) && (svm->vcpu.arch.hflags & HF_VINTR_MASK));
 }
 
 static void enable_irq_window(struct kvm_vcpu *vcpu)