From: Wei Huang Date: Wed, 13 Aug 2014 16:06:14 +0000 (-0400) Subject: KVM: SVM: add rdmsr support for AMD event registers X-Git-Tag: v3.18-rc1~13^2~58 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dc9b2d933a1d5782b70977024f862759c8ebb2f7;p=platform%2Fkernel%2Flinux-exynos.git 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 Signed-off-by: Paolo Bonzini --- diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8f1e22d..5f5edb6 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -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: