diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 11:09:44 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-15 05:20:46 -0500 |
| commit | bc624d9f1bbbfd6ae7057437cd3fcfef17066399 (patch) | |
| tree | b95a2b92cd4e04c7df274595eca74c1648c9ffc9 | |
| parent | 8d4846b9b15045598d760470789716fb08b9b317 (diff) | |
KVM: SVM: Do not allow instruction emulation under SEV-ES
When a guest is running as an SEV-ES guest, it is not possible to emulate
instructions. Add support to prevent instruction emulation.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <f6355ea3024fda0a3eb5eb99c6b62dca10d792bd.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index bec427acab20..cade703d6edb 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4158,6 +4158,12 @@ static bool svm_can_emulate_instruction(struct kvm_vcpu *vcpu, void *insn, int i unsigned long cr4; /* + * When the guest is an SEV-ES guest, emulation is not possible. + */ + if (sev_es_guest(vcpu->kvm)) + return false; + + /* * Detect and workaround Errata 1096 Fam_17h_00_0Fh. * * Errata: |