From mboxrd@z Thu Jan 1 00:00:00 1970 From: Avi Kivity Subject: Re: [PATCH 3/4] ignore PCI ECS I/O enablement Date: Wed, 24 Jun 2009 14:31:18 +0300 Message-ID: <4A420E86.4040002@redhat.com> References: <1245840276-12702-1-git-send-email-andre.przywara@amd.com> <1245840276-12702-2-git-send-email-andre.przywara@amd.com> <1245840276-12702-3-git-send-email-andre.przywara@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: kvm@vger.kernel.org To: Andre Przywara Return-path: Received: from mx2.redhat.com ([66.187.237.31]:36968 "EHLO mx2.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751240AbZFXLaP (ORCPT ); Wed, 24 Jun 2009 07:30:15 -0400 In-Reply-To: <1245840276-12702-3-git-send-email-andre.przywara@amd.com> Sender: kvm-owner@vger.kernel.org List-ID: On 06/24/2009 01:44 PM, Andre Przywara wrote: > Linux guests will try to enable access to the extended PCI config space > via the I/O ports 0xCF8/0xCFC on AMD Fam10h CPU. Since we (currently?) > don't use ECS, simply ignore this write attempt. > > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c > index a148f4c..e6e61ee 100644 > --- a/arch/x86/kvm/x86.c > +++ b/arch/x86/kvm/x86.c > @@ -804,6 +804,8 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data) > return 1; > } > break; > + case MSR_AMD64_NB_CFG: > + break; > case MSR_IA32_DEBUGCTLMSR: > if (!data) { > /* We support the non-activated case already */ > I see Linux does both rdmsr and wrmsr, don't we need to support both? -- error compiling committee.c: too many arguments to function