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Subject[PATCH 9/9] KVM: Simplify test for interrupt window
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No need to test for rflags.if as both VT and SVM specs assure us that on exit caused from
interrupt window opening, 'if' is set.

Signed-off-by: Dor Laor <dor.laor@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

Index: linux-2.6/drivers/kvm/svm.c
===================================================================
--- linux-2.6.orig/drivers/kvm/svm.c
+++ linux-2.6/drivers/kvm/svm.c
@@ -1206,8 +1206,7 @@ static int interrupt_window_interception
* possible
*/
if (kvm_run->request_interrupt_window &&
- !vcpu->irq_summary &&
- (vcpu->svm->vmcb->save.rflags & X86_EFLAGS_IF)) {
+ !vcpu->irq_summary) {
++kvm_stat.irq_window_exits;
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
return 0;
Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c
+++ linux-2.6/drivers/kvm/vmx.c
@@ -1604,8 +1604,7 @@ static int handle_interrupt_window(struc
* possible
*/
if (kvm_run->request_interrupt_window &&
- !vcpu->irq_summary &&
- (vmcs_readl(GUEST_RFLAGS) & X86_EFLAGS_IF)) {
+ !vcpu->irq_summary) {
kvm_run->exit_reason = KVM_EXIT_IRQ_WINDOW_OPEN;
++kvm_stat.irq_window_exits;
return 0;
-
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