From: Wei Huang <wehuang@xxxxxxxxxx> 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit dc9b2d933a1d5782b70977024f862759c8ebb2f7 upstream. 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> Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx> Signed-off-by: Jiri Slaby <jslaby@xxxxxxx> --- 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 356e78f2ad1a..c47a4ecb584c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2367,7 +2367,13 @@ 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: -- 2.8.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html