From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Cc: akpm-3NddpPZAyC0@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 9/9] KVM: Simplify test for interrupt window
Date: Fri, 05 Jan 2007 07:58:45 -0000 [thread overview]
Message-ID: <20070105075845.EAFEA250048@il.qumranet.com> (raw)
In-Reply-To: <459E02E7.5020407-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
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-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Signed-off-by: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
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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prev parent reply other threads:[~2007-01-05 7:58 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-05 7:48 [PATCH 0/9] KVM: Flush out my patch queue Avi Kivity
[not found] ` <459E02E7.5020407-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-01-05 7:50 ` [PATCH 1/9] KVM: Improve reporting of vmwrite errors Avi Kivity
2007-01-05 7:51 ` [PATCH 2/9] KVM: Initialize vcpu->kvm a little earlier Avi Kivity
2007-01-05 7:52 ` [PATCH 3/9] KVM: Avoid oom on cr3 switch Avi Kivity
2007-01-05 7:53 ` [PATCH 4/9] KVM: Add missing 'break' Avi Kivity
2007-01-05 7:54 ` [PATCH 5/9] KVM: Don't set guest cr3 from vmx_vcpu_setup() Avi Kivity
2007-01-05 7:55 ` [PATCH 6/9] KVM: MMU: Add missing dirty bit Avi Kivity
2007-01-05 7:56 ` [PATCH 7/9] KVM: Make loading cr3 more robust Avi Kivity
2007-01-05 7:57 ` [PATCH 8/9] KVM: Simplify mmu_alloc_roots() Avi Kivity
2007-01-05 7:58 ` Avi Kivity [this message]
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