From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755453AbYDUKhu (ORCPT ); Mon, 21 Apr 2008 06:37:50 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755088AbYDUKa2 (ORCPT ); Mon, 21 Apr 2008 06:30:28 -0400 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:37971 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756051AbYDUKaJ (ORCPT ); Mon, 21 Apr 2008 06:30:09 -0400 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 24/31] KVM: SVM: sync TPR value to V_TPR field in the VMCB Date: Mon, 21 Apr 2008 13:29:50 +0300 Message-Id: <1208773797-7829-25-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.5 In-Reply-To: <1208773797-7829-1-git-send-email-avi@qumranet.com> References: <1208773797-7829-1-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Joerg Roedel This patch adds syncing of the lapic.tpr field to the V_TPR field of the VMCB. With this change we can safely remove the CR8 read intercept. Signed-off-by: Joerg Roedel Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 18 ++++++++++++++++-- 1 files changed, 16 insertions(+), 2 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 3379e13..f8ce36e 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -486,8 +486,7 @@ static void init_vmcb(struct vcpu_svm *svm) control->intercept_cr_read = INTERCEPT_CR0_MASK | INTERCEPT_CR3_MASK | - INTERCEPT_CR4_MASK | - INTERCEPT_CR8_MASK; + INTERCEPT_CR4_MASK; control->intercept_cr_write = INTERCEPT_CR0_MASK | INTERCEPT_CR3_MASK | @@ -1621,6 +1620,19 @@ static void svm_prepare_guest_switch(struct kvm_vcpu *vcpu) { } +static inline void sync_lapic_to_cr8(struct kvm_vcpu *vcpu) +{ + struct vcpu_svm *svm = to_svm(vcpu); + u64 cr8; + + if (!irqchip_in_kernel(vcpu->kvm)) + return; + + cr8 = kvm_get_cr8(vcpu); + svm->vmcb->control.int_ctl &= ~V_TPR_MASK; + svm->vmcb->control.int_ctl |= cr8 & V_TPR_MASK; +} + static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1630,6 +1642,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) pre_svm_run(svm); + sync_lapic_to_cr8(vcpu); + save_host_msrs(vcpu); fs_selector = read_fs(); gs_selector = read_gs(); -- 1.5.5