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@xxxxxxxxxx> --- arch/x86/kvm/x86.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index ef432f8..3f10ca2 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2399,7 +2399,13 @@ 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: -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
