Commit dc9b2d93 authored Aug 13, 2014 by Wei Huang Committed by Paolo Bonzini Aug 19, 2014

KVM: SVM: add rdmsr support for AMD event registers



Current KVM only supports RDMSR for K7_EVNTSEL0 and K7_PERFCTR0
MSRs. Reading the rest MSRs will trigger KVM to inject #GP into
guest VM. This causes a warning message "Failed to access perfctr
msr (MSR c0010001 is ffffffffffffffff)" on AMD host. This patch
adds RDMSR support for all K7_EVNTSELn and K7_PERFCTRn registers
and thus supresses the warning message.

Signed-off-by: Wei Huang <wehuang@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 30d1e0e8

arch/x86/kvm/x86.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -2419,7 +2419,13 @@ int kvm_get_msr_common(struct kvm_vcpu vcpu, u32 msr, u64 pdata)
		case MSR_K7_HWCR:
		case MSR_VM_HSAVE_PA:
		case MSR_K7_EVNTSEL0:
		case MSR_K7_EVNTSEL1:
		case MSR_K7_EVNTSEL2:
		case MSR_K7_EVNTSEL3:
		case MSR_K7_PERFCTR0:
		case MSR_K7_PERFCTR1:
		case MSR_K7_PERFCTR2:
		case MSR_K7_PERFCTR3:
		case MSR_K8_INT_PENDING_MSG:
		case MSR_AMD64_NB_CFG:
		case MSR_FAM10H_MMIO_CONF_BASE:

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