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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-18 17:33:04 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-21 07:41:22 +0200 |
| commit | 3afb1121800128aae9f5722e50097fcf1a9d4d88 (patch) | |
| tree | 6bf23ea486d09f71f6f0ef5369a04feead1746a8 /arch/x86/kvm | |
| parent | ebae871a509d3c24b32ff67af2671dadffc58770 (diff) | |
| download | op-kernel-dev-3afb1121800128aae9f5722e50097fcf1a9d4d88.zip op-kernel-dev-3afb1121800128aae9f5722e50097fcf1a9d4d88.tar.gz | |
KVM: x86: trap AMD MSRs for the TSeg base and mask
These have roughly the same purpose as the SMRR, which we do not need
to implement in KVM. However, Linux accesses MSR_K8_TSEG_ADDR at
boot, which causes problems when running a Xen dom0 under KVM.
Just return 0, meaning that processor protection of SMRAM is not
in effect.
Reported-by: M A Young <m.a.young@durham.ac.uk>
Cc: stable@vger.kernel.org
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -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 6bbb0df..991466b 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2190,6 +2190,8 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case MSR_IA32_LASTINTFROMIP: case MSR_IA32_LASTINTTOIP: case MSR_K8_SYSCFG: + case MSR_K8_TSEG_ADDR: + case MSR_K8_TSEG_MASK: case MSR_K7_HWCR: case MSR_VM_HSAVE_PA: case MSR_K8_INT_PENDING_MSG: |
