diff options
| author | Michael Roth <michael.roth@amd.com> | 2024-05-01 02:10:47 -0500 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-05-07 13:28:04 -0400 |
| commit | 8d1a36e42be6b0864c2c30f94536663b6f08fb48 (patch) | |
| tree | bea59a98a90b1e23227fd48dc8f9952a65bb4eff | |
| parent | ae01818398236ad6d8ecd6970334baf0b7c57409 (diff) | |
KVM: SEV: Add GHCB handling for termination requests
GHCB version 2 adds support for a GHCB-based termination request that
a guest can issue when it reaches an error state and wishes to inform
the hypervisor that it should be terminated. Implement support for that
similarly to GHCB MSR-based termination requests that are already
available to SEV-ES guests via earlier versions of the GHCB protocol.
See 'Termination Request' in the 'Invoking VMGEXIT' section of the GHCB
specification for more details.
Signed-off-by: Michael Roth <michael.roth@amd.com>
Message-ID: <20240501071048.2208265-4-michael.roth@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 37d396636b71..01baa8aa7e12 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2704,6 +2704,7 @@ static int sev_es_validate_vmgexit(struct vcpu_svm *svm) case SVM_VMGEXIT_AP_JUMP_TABLE: case SVM_VMGEXIT_UNSUPPORTED_EVENT: case SVM_VMGEXIT_HV_FEATURES: + case SVM_VMGEXIT_TERM_REQUEST: break; default: reason = GHCB_ERR_INVALID_EVENT; @@ -3099,6 +3100,14 @@ int sev_handle_vmgexit(struct kvm_vcpu *vcpu) ret = 1; break; + case SVM_VMGEXIT_TERM_REQUEST: + pr_info("SEV-ES guest requested termination: reason %#llx info %#llx\n", + control->exit_info_1, control->exit_info_2); + vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT; + vcpu->run->system_event.type = KVM_SYSTEM_EVENT_SEV_TERM; + vcpu->run->system_event.ndata = 1; + vcpu->run->system_event.data[0] = control->ghcb_gpa; + break; case SVM_VMGEXIT_UNSUPPORTED_EVENT: vcpu_unimpl(vcpu, "vmgexit: unsupported event - exit_info_1=%#llx, exit_info_2=%#llx\n", |