3.16.63-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Ladi Prosek <[email protected]> commit 405a353a0e20d09090ad96147da6afad9b0ce056 upstream. Hyper-V writes 0x800000000000 to MSR_AMD64_DC_CFG when running on AMD CPUs as recommended in erratum 383, analogous to our svm_init_erratum_383. By ignoring the MSR, this patch enables running Hyper-V in L1 on AMD. Signed-off-by: Ladi Prosek <[email protected]> Signed-off-by: Radim Krčmář <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- arch/x86/kvm/x86.c | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2085,6 +2085,7 @@ int kvm_set_msr_common(struct kvm_vcpu * case MSR_VM_HSAVE_PA: case MSR_AMD64_PATCH_LOADER: case MSR_AMD64_BU_CFG2: + case MSR_AMD64_DC_CFG: break; case MSR_EFER: @@ -2462,6 +2463,7 @@ int kvm_get_msr_common(struct kvm_vcpu * case MSR_FAM10H_MMIO_CONF_BASE: case MSR_AMD64_BU_CFG2: case MSR_IA32_PERF_CTL: + case MSR_AMD64_DC_CFG: msr_info->data = 0; break; case MSR_P6_PERFCTR0:
