This patch reorganizes the logic in svm_interrupt_allowed to
make it better to read. This is important because the logic
is a lot more complicated with Nested SVM.
Signed-off-by: Joerg Roedel <joerg.roedel@xxxxxxx>
---
arch/x86/kvm/svm.c | 16 ++++++++++++----
1 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index a2f2d43..668460c 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2454,10 +2454,18 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
{
struct vcpu_svm *svm = to_svm(vcpu);
struct vmcb *vmcb = svm->vmcb;
- return (vmcb->save.rflags & X86_EFLAGS_IF) &&
- !(vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) &&
- gif_set(svm) &&
- !(is_nested(svm) && (svm->vcpu.arch.hflags & HF_VINTR_MASK));
+ int ret;
+
+ if (!gif_set(svm) ||
+ (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK))
+ return 0;
+
+ ret = !!(vmcb->save.rflags & X86_EFLAGS_IF);
+
+ if (is_nested(svm))
+ return ret && !(svm->vcpu.arch.hflags & HF_VINTR_MASK);
+
+ return ret;
}
static void enable_irq_window(struct kvm_vcpu *vcpu)
--
1.6.3.3
--
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