From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761185AbXKHKgq (ORCPT ); Thu, 8 Nov 2007 05:36:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759693AbXKHKfL (ORCPT ); Thu, 8 Nov 2007 05:35:11 -0500 Received: from il.qumranet.com ([82.166.9.18]:52473 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758464AbXKHKfD (ORCPT ); Thu, 8 Nov 2007 05:35:03 -0500 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Avi Kivity Subject: [PATCH 5/5] KVM: SVM: Intercept the 'invd' and 'wbinvd' instructions Date: Thu, 8 Nov 2007 12:35:30 +0200 Message-Id: <11945181301496-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.3 In-Reply-To: <11945181301744-git-send-email-avi@qumranet.com> References: <11945181301744-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 'invd' can destroy host data, and 'wbinvd' allows the guest to induce long (milliseconds) latencies. Noted by Ben Serebrin. Signed-off-by: Avi Kivity --- drivers/kvm/svm.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index 7376805..7a6eead 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -494,6 +494,7 @@ static void init_vmcb(struct vmcb *vmcb) */ /* (1ULL << INTERCEPT_SELECTIVE_CR0) | */ (1ULL << INTERCEPT_CPUID) | + (1ULL << INTERCEPT_INVD) | (1ULL << INTERCEPT_HLT) | (1ULL << INTERCEPT_INVLPGA) | (1ULL << INTERCEPT_IOIO_PROT) | @@ -507,6 +508,7 @@ static void init_vmcb(struct vmcb *vmcb) (1ULL << INTERCEPT_STGI) | (1ULL << INTERCEPT_CLGI) | (1ULL << INTERCEPT_SKINIT) | + (1ULL << INTERCEPT_WBINVD) | (1ULL << INTERCEPT_MONITOR) | (1ULL << INTERCEPT_MWAIT); @@ -1247,6 +1249,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_VINTR] = interrupt_window_interception, /* [SVM_EXIT_CR0_SEL_WRITE] = emulate_on_interception, */ [SVM_EXIT_CPUID] = cpuid_interception, + [SVM_EXIT_INVD] = emulate_on_interception, [SVM_EXIT_HLT] = halt_interception, [SVM_EXIT_INVLPG] = emulate_on_interception, [SVM_EXIT_INVLPGA] = invalid_op_interception, @@ -1261,6 +1264,7 @@ static int (*svm_exit_handlers[])(struct vcpu_svm *svm, [SVM_EXIT_STGI] = invalid_op_interception, [SVM_EXIT_CLGI] = invalid_op_interception, [SVM_EXIT_SKINIT] = invalid_op_interception, + [SVM_EXIT_WBINVD] = emulate_on_interception, [SVM_EXIT_MONITOR] = invalid_op_interception, [SVM_EXIT_MWAIT] = invalid_op_interception, }; -- 1.5.3