From patchwork Mon May 18 09:22:54 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avi Kivity X-Patchwork-Id: 24440 Received: from vger.kernel.org (vger.kernel.org [209.132.176.167]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id n4I9ONSG026513 for ; Mon, 18 May 2009 09:24:26 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756576AbZERJYB (ORCPT ); Mon, 18 May 2009 05:24:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753935AbZERJYA (ORCPT ); Mon, 18 May 2009 05:24:00 -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 Received: from int-mx2.corp.redhat.com (int-mx2.corp.redhat.com [172.16.27.26]) by mx2.redhat.com (8.13.8/8.13.8) with ESMTP id n4I9NCdF016959; Mon, 18 May 2009 05:23:12 -0400 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx2.corp.redhat.com (8.13.1/8.13.1) with ESMTP id n4I9NBqg004169; Mon, 18 May 2009 05:23:11 -0400 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id n4I9N94k017908; Mon, 18 May 2009 05:23:10 -0400 Received: from localhost.localdomain (cleopatra.tlv.redhat.com [10.35.255.11]) by cleopatra.tlv.redhat.com (Postfix) with ESMTP id 778B4A02C3; Mon, 18 May 2009 12:23:07 +0300 (IDT) 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> X-Scanned-By: MIMEDefang 2.58 on 172.16.27.26 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@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: