From: Avi Kivity <avi@redhat.com>
To: Andre Przywara <andre.przywara@amd.com>
Cc: kvm@vger.kernel.org
Subject: Re: [PATCH 3/4] ignore PCI ECS I/O enablement
Date: Wed, 24 Jun 2009 14:31:18 +0300 [thread overview]
Message-ID: <4A420E86.4040002@redhat.com> (raw)
In-Reply-To: <1245840276-12702-3-git-send-email-andre.przywara@amd.com>
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
next prev parent reply other threads:[~2009-06-24 11:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-24 10:44 [PATCH 1/4] ignore AMDs HWCR register access to set the FFDIS bit Andre Przywara
2009-06-24 10:44 ` [PATCH 2/4] ignore reads from AMDs C1E enabled MSR Andre Przywara
2009-06-24 10:44 ` [PATCH 3/4] ignore PCI ECS I/O enablement Andre Przywara
2009-06-24 10:44 ` [PATCH 4/4] dont trim the guest's hypervisor CPUID bit in KVM if the guest requests it Andre Przywara
2009-06-24 11:28 ` Avi Kivity
2009-06-24 12:28 ` Andre Przywara
2009-06-24 13:28 ` Andre Przywara
2009-06-24 11:31 ` Avi Kivity [this message]
2009-06-24 13:37 ` [PATCH 3/4] ignore PCI ECS I/O enablement Andre Przywara
2009-07-01 9:50 ` Avi Kivity
2009-06-24 11:37 ` [PATCH 1/4] ignore AMDs HWCR register access to set the FFDIS bit Avi Kivity
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