From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757574AbYDUKdU (ORCPT ); Mon, 21 Apr 2008 06:33:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756440AbYDUKaP (ORCPT ); Mon, 21 Apr 2008 06:30:15 -0400 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:37889 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754753AbYDUKaC (ORCPT ); Mon, 21 Apr 2008 06:30:02 -0400 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Joerg Roedel Subject: [PATCH 10/31] KVM: SVM: do not intercept task switch with NPT Date: Mon, 21 Apr 2008 13:29:36 +0300 Message-Id: <1208773797-7829-11-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 When KVM uses NPT there is no reason to intercept task switches. This patch removes the intercept for it in that case. Signed-off-by: Joerg Roedel Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index da3ddef..8d04aed 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -591,6 +591,7 @@ static void init_vmcb(struct vcpu_svm *svm) if (npt_enabled) { /* Setup VMCB for Nested Paging */ control->nested_ctl = 1; + control->intercept &= ~(1ULL << INTERCEPT_TASK_SWITCH); control->intercept_exceptions &= ~(1 << PF_VECTOR); control->intercept_cr_read &= ~(INTERCEPT_CR0_MASK| INTERCEPT_CR3_MASK); -- 1.5.5