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| author | Ladi Prosek <lprosek@redhat.com> | 2017-04-06 15:22:20 +0200 |
|---|---|---|
| committer | Radim Krčmář <rkrcmar@redhat.com> | 2017-04-12 21:09:24 +0200 |
| commit | 405a353a0e20d09090ad96147da6afad9b0ce056 (patch) | |
| tree | 9eeb49f6102545d202c290c9364861bc140833e9 /arch/x86/kvm/x86.c | |
| parent | 5a48a622718cbd2d26d449f38ba40a2b5f7212cf (diff) | |
| download | linux-405a353a0e20d09090ad96147da6afad9b0ce056.tar.bz2 | |
KVM: x86: Add MSR_AMD64_DC_CFG to the list of ignored MSRs
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 <lprosek@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2e4a47275061..34bf64fb4dea 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2137,6 +2137,7 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case MSR_VM_HSAVE_PA: case MSR_AMD64_PATCH_LOADER: case MSR_AMD64_BU_CFG2: + case MSR_AMD64_DC_CFG: break; case MSR_EFER: @@ -2399,6 +2400,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) 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_K7_EVNTSEL0 ... MSR_K7_EVNTSEL3: |