diff options
| author | Maxim Levitsky <[email protected]> | 2024-08-02 18:16:08 +0300 |
|---|---|---|
| committer | Sean Christopherson <[email protected]> | 2024-08-22 11:25:34 -0700 |
| commit | dad1613e0533b380318281c1519e1a3477c2d0d2 (patch) | |
| tree | 0fb423b92d4c0bd69e2005fa011c23a7bbc425f8 | |
| parent | 4bcdd831d9d01e0fb64faea50732b59b2ee88da1 (diff) | |
KVM: SVM: fix emulation of msr reads/writes of MSR_FS_BASE and MSR_GS_BASE
If these msrs are read by the emulator (e.g due to 'force emulation' prefix),
SVM code currently fails to extract the corresponding segment bases,
and return them to the emulator.
Fix that.
Cc: [email protected]
Signed-off-by: Maxim Levitsky <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sean Christopherson <[email protected]>
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d6f252555ab3..b11454151f25 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2876,6 +2876,12 @@ static int svm_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) case MSR_CSTAR: msr_info->data = svm->vmcb01.ptr->save.cstar; break; + case MSR_GS_BASE: + msr_info->data = svm->vmcb01.ptr->save.gs.base; + break; + case MSR_FS_BASE: + msr_info->data = svm->vmcb01.ptr->save.fs.base; + break; case MSR_KERNEL_GS_BASE: msr_info->data = svm->vmcb01.ptr->save.kernel_gs_base; break; @@ -3101,6 +3107,12 @@ static int svm_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr) case MSR_CSTAR: svm->vmcb01.ptr->save.cstar = data; break; + case MSR_GS_BASE: + svm->vmcb01.ptr->save.gs.base = data; + break; + case MSR_FS_BASE: + svm->vmcb01.ptr->save.fs.base = data; + break; case MSR_KERNEL_GS_BASE: svm->vmcb01.ptr->save.kernel_gs_base = data; break; |