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| author | Borislav Petkov <bp@suse.de> | 2019-04-18 19:32:50 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-04-30 22:32:22 +0300 |
| commit | 191c8137a93989825f0e9f78a198367dde677216 (patch) | |
| tree | ff52632c417b12349903c076c23e0c06eeb82ea5 /arch/x86/include | |
| parent | 19e38336d71d22e27b60e70334ad572d4e3d0042 (diff) | |
| download | linux-191c8137a93989825f0e9f78a198367dde677216.tar.xz | |
x86/kvm: Implement HWCR support
The hardware configuration register has some useful bits which can be
used by guests. Implement McStatusWrEn which can be used by guests when
injecting MCEs with the in-kernel mce-inject module.
For that, we need to set bit 18 - McStatusWrEn - first, before writing
the MCi_STATUS registers (otherwise we #GP).
Add the required machinery to do so.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Jim Mattson <jmattson@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: KVM <kvm@vger.kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Yazen Ghannam <Yazen.Ghannam@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 8d68ba0cba0c..2532bfb09d8b 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -781,6 +781,9 @@ struct kvm_vcpu_arch { /* Flush the L1 Data cache for L1TF mitigation on VMENTER */ bool l1tf_flush_l1d; + + /* AMD MSRC001_0015 Hardware Configuration */ + u64 msr_hwcr; }; struct kvm_lpage_info { |