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KVM: Ignore PCI ECS I/O enablement 

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 write and read attempts.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Andre Przywara 2009-06-24 15:37:05 +02:00 committed by Avi Kivity
parent ae8c1c4025
commit c323c0e5f0
1 changed files with 3 additions and 0 deletions
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3
arch/x86/kvm/x86.c
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@ -844,6 +844,8 @@ 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 */
@ -1049,6 +1051,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case MSR_P6_EVNTSEL1:
case MSR_K7_EVNTSEL0:
case MSR_K8_INT_PENDING_MSG:
case MSR_AMD64_NB_CFG:
data = 0;
break;
case MSR_MTRRcap: