diff options
| author | Ladi Prosek <lprosek@redhat.com> | 2017-04-06 15:22:20 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2019-02-11 17:54:28 +0000 |
| commit | f082d564d99bd33b95fc2f51170bfb49d2e29744 (patch) | |
| tree | 3bb6058945a8bc6191c4507f04078ff03438beec | |
| parent | 7da8d88b7bc1f4d1f26564ffb5a2c06f3998b801 (diff) | |
KVM: x86: Add MSR_AMD64_DC_CFG to the list of ignored MSRs
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 <lprosek@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -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 c02adabf6138..d47c468efc19 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2085,6 +2085,7 @@ 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: @@ -2462,6 +2463,7 @@ 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_P6_PERFCTR0: |