[PATCH 06/15] Use EVENTINJ to inject interrupts.

From: Gleb Natapov <gleb@redhat.com>
To: avi@redhat.com
Cc: kvm@vger.kernel.org, joerg.roedel@amd.com, sheng@linux.intel.com,
	Gleb Natapov <gleb@redhat.com>
Subject: [PATCH 06/15] Use EVENTINJ to inject interrupts.
Date: Mon, 13 Apr 2009 12:55:36 +0300	[thread overview]
Message-ID: <1239616545-25199-7-git-send-email-gleb@redhat.com> (raw)
In-Reply-To: <1239616545-25199-1-git-send-email-gleb@redhat.com>

Use VINT only for detecting when IRQ windows is open again.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
---
 arch/x86/kvm/svm.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 053370d..3b4c00f 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -2236,13 +2236,19 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
 		((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
 }
 
+static void svm_queue_irq(struct vcpu_svm *svm, unsigned nr)
+{
+	svm->vmcb->control.event_inj = nr |
+		SVM_EVTINJ_VALID | SVM_EVTINJ_TYPE_INTR;
+}
+
 static void svm_set_irq(struct kvm_vcpu *vcpu, int irq)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
 
 	nested_svm_intr(svm);
 
-	svm_inject_irq(svm, irq);
+	svm_queue_irq(svm, irq);
 }
 
 static void update_cr8_intercept(struct kvm_vcpu *vcpu)
@@ -2285,7 +2291,7 @@ static void svm_intr_inject(struct kvm_vcpu *vcpu)
 {
 	/* try to reinject previous events if any */
 	if (vcpu->arch.interrupt.pending) {
-		svm_inject_irq(to_svm(vcpu), vcpu->arch.interrupt.nr);
+		svm_queue_irq(to_svm(vcpu), vcpu->arch.interrupt.nr);
 		return;
 	}
 
@@ -2293,7 +2299,7 @@ static void svm_intr_inject(struct kvm_vcpu *vcpu)
 	if (kvm_cpu_has_interrupt(vcpu)) {
 		if (vcpu->arch.interrupt_window_open) {
 			kvm_queue_interrupt(vcpu, kvm_cpu_get_interrupt(vcpu));
-			svm_inject_irq(to_svm(vcpu), vcpu->arch.interrupt.nr);
+			svm_queue_irq(to_svm(vcpu), vcpu->arch.interrupt.nr);
 		}
 	}
 }
-- 
1.5.6.5

