From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50721 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752719AbcGXXFK (ORCPT ); Sun, 24 Jul 2016 19:05:10 -0400 Subject: Patch "kvm: vmx: check apicv is active before using VT-d posted interrupt" has been added to the 4.6-stable tree To: yang.zhang.wz@gmail.com, gregkh@linuxfoundation.org, pbonzini@redhat.com, shengge.dsg@alibaba-inc.com Cc: , From: Date: Sun, 24 Jul 2016 16:05:25 -0700 Message-ID: <1469401525155126@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled kvm: vmx: check apicv is active before using VT-d posted interrupt to the 4.6-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: kvm-vmx-check-apicv-is-active-before-using-vt-d-posted-interrupt.patch and it can be found in the queue-4.6 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From a0052191624e9bf8a8f9dc41b92ab5f252566c3c Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Mon, 13 Jun 2016 09:56:56 +0800 Subject: kvm: vmx: check apicv is active before using VT-d posted interrupt From: Yang Zhang commit a0052191624e9bf8a8f9dc41b92ab5f252566c3c upstream. VT-d posted interrupt is relying on the CPU side's posted interrupt. Need to check whether VCPU's APICv is active before enabing VT-d posted interrupt. Fixes: d62caabb41f33d96333f9ef15e09cd26e1c12760 Signed-off-by: Yang Zhang Signed-off-by: Shengge Ding Signed-off-by: Paolo Bonzini Signed-off-by: Greg Kroah-Hartman --- arch/x86/kvm/vmx.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2072,7 +2072,8 @@ static void vmx_vcpu_pi_load(struct kvm_ unsigned int dest; if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP)) + !irq_remapping_cap(IRQ_POSTING_CAP) || + !kvm_vcpu_apicv_active(vcpu)) return; do { @@ -2180,7 +2181,8 @@ static void vmx_vcpu_pi_put(struct kvm_v struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu); if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP)) + !irq_remapping_cap(IRQ_POSTING_CAP) || + !kvm_vcpu_apicv_active(vcpu)) return; /* Set SN when the vCPU is preempted */ @@ -10702,7 +10704,8 @@ static int vmx_pre_block(struct kvm_vcpu struct pi_desc *pi_desc = vcpu_to_pi_desc(vcpu); if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP)) + !irq_remapping_cap(IRQ_POSTING_CAP) || + !kvm_vcpu_apicv_active(vcpu)) return 0; vcpu->pre_pcpu = vcpu->cpu; @@ -10768,7 +10771,8 @@ static void vmx_post_block(struct kvm_vc unsigned long flags; if (!kvm_arch_has_assigned_device(vcpu->kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP)) + !irq_remapping_cap(IRQ_POSTING_CAP) || + !kvm_vcpu_apicv_active(vcpu)) return; do { @@ -10821,7 +10825,8 @@ static int vmx_update_pi_irte(struct kvm int idx, ret = -EINVAL; if (!kvm_arch_has_assigned_device(kvm) || - !irq_remapping_cap(IRQ_POSTING_CAP)) + !irq_remapping_cap(IRQ_POSTING_CAP) || + !kvm_vcpu_apicv_active(kvm->vcpus[0])) return 0; idx = srcu_read_lock(&kvm->irq_srcu); Patches currently in stable-queue which might be from yang.zhang.wz@gmail.com are queue-4.6/kvm-vmx-check-apicv-is-active-before-using-vt-d-posted-interrupt.patch