From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760202AbXLWPJI (ORCPT ); Sun, 23 Dec 2007 10:09:08 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756219AbXLWOwg (ORCPT ); Sun, 23 Dec 2007 09:52:36 -0500 Received: from il.qumranet.com ([82.166.9.18]:35901 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754602AbXLWOvq (ORCPT ); Sun, 23 Dec 2007 09:51:46 -0500 From: Avi Kivity To: linux-kernel@vger.kernel.org, kvm-devel@lists.sourceforge.net Subject: [PATCH 40/50] KVM: Move apic timer interrupt backlog processing to common code Date: Sun, 23 Dec 2007 16:51:25 +0200 Message-Id: <1198421495-31481-41-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.3.7 In-Reply-To: <1198421495-31481-1-git-send-email-avi@qumranet.com> References: <1198421495-31481-1-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Beside the obvious goodness of making code more common, this prevents a livelock with the next patch which moves interrupt injection out of the critical section. Signed-off-by: Avi Kivity --- drivers/kvm/kvm_main.c | 2 ++ drivers/kvm/svm.c | 1 - drivers/kvm/vmx.c | 1 - 3 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 03d6069..c94d4df 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2144,6 +2144,8 @@ again: if (unlikely(r)) goto out; + kvm_inject_pending_timer_irqs(vcpu); + preempt_disable(); kvm_x86_ops->prepare_guest_switch(vcpu); diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 746a377..4ff2922 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -1355,7 +1355,6 @@ static void svm_intr_assist(struct kvm_vcpu *vcpu) struct vmcb *vmcb = svm->vmcb; int intr_vector = -1; - kvm_inject_pending_timer_irqs(vcpu); if ((vmcb->control.exit_int_info & SVM_EVTINJ_VALID) && ((vmcb->control.exit_int_info & SVM_EVTINJ_TYPE_MASK) == 0)) { intr_vector = vmcb->control.exit_int_info & diff --git a/drivers/kvm/vmx.c b/drivers/kvm/vmx.c index 1336174..be6846d 100644 --- a/drivers/kvm/vmx.c +++ b/drivers/kvm/vmx.c @@ -2191,7 +2191,6 @@ static void vmx_intr_assist(struct kvm_vcpu *vcpu) int has_ext_irq, interrupt_window_open; int vector; - kvm_inject_pending_timer_irqs(vcpu); update_tpr_threshold(vcpu); has_ext_irq = kvm_cpu_has_interrupt(vcpu); -- 1.5.3.7