From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756877AbZERJfi (ORCPT ); Mon, 18 May 2009 05:35:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756577AbZERJYC (ORCPT ); Mon, 18 May 2009 05:24:02 -0400 Received: from mx2.redhat.com ([66.187.237.31]:38425 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754324AbZERJXL (ORCPT ); Mon, 18 May 2009 05:23:11 -0400 From: Avi Kivity To: linux-kernel@vger.kernel.org Cc: kvm@vger.kernel.org Subject: [PATCH 32/43] KVM: x86: Ignore reads to EVNTSEL MSRs Date: Mon, 18 May 2009 12:22:54 +0300 Message-Id: <1242638585-18470-33-git-send-email-avi@redhat.com> In-Reply-To: <1242638585-18470-1-git-send-email-avi@redhat.com> References: <1242638585-18470-1-git-send-email-avi@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Amit Shah We ignore writes to the performance counters and performance event selector registers already. Kaspersky antivirus reads the eventsel MSR causing it to crash with the current behaviour. Return 0 as data when the eventsel registers are read to stop the crash. Signed-off-by: Amit Shah Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a27a64c..0131b5f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -891,6 +891,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata) case MSR_IA32_LASTINTFROMIP: case MSR_IA32_LASTINTTOIP: case MSR_VM_HSAVE_PA: + case MSR_P6_EVNTSEL0: + case MSR_P6_EVNTSEL1: data = 0; break; case MSR_MTRRcap: -- 1.6.0.6