From c323c0e5f06150cc000e09e8e3b22356099e7bde Mon Sep 17 00:00:00 2001 From: Andre Przywara Date: Wed, 24 Jun 2009 15:37:05 +0200 Subject: [PATCH] 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 Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 96f0ae7d97b6..af40e23df251 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -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: