diff options
| author | Peter Gonda <pgonda@google.com> | 2022-04-08 00:02:33 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-04-13 20:37:46 +0300 |
| commit | c24a950ec7d60c4da91dc3f273295c7f438b531e (patch) | |
| tree | 826747f1331d720dca6b8677fc46e56069b7f6a7 /arch/x86/kvm/svm/sev.c | |
| parent | 9bd1f0efa859b61950d109b32ff8d529cc33a3ad (diff) | |
| download | linux-c24a950ec7d60c4da91dc3f273295c7f438b531e.tar.xz | |
KVM, SEV: Add KVM_EXIT_SHUTDOWN metadata for SEV-ES
If an SEV-ES guest requests termination, exit to userspace with
KVM_EXIT_SYSTEM_EVENT and a dedicated SEV_TERM type instead of -EINVAL
so that userspace can take appropriate action.
See AMD's GHCB spec section '4.1.13 Termination Request' for more details.
Suggested-by: Sean Christopherson <seanjc@google.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Peter Gonda <pgonda@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Message-Id: <20220407210233.782250-1-pgonda@google.com>
[Add documentatino. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/sev.c')
| -rw-r--r-- | arch/x86/kvm/svm/sev.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 537aaddc852f..a93f0d01bb90 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2738,8 +2738,13 @@ static int sev_handle_vmgexit_msr_protocol(struct vcpu_svm *svm) pr_info("SEV-ES guest requested termination: %#llx:%#llx\n", reason_set, reason_code); - ret = -EINVAL; - break; + vcpu->run->exit_reason = KVM_EXIT_SYSTEM_EVENT; + vcpu->run->system_event.type = KVM_SYSTEM_EVENT_SEV_TERM | + KVM_SYSTEM_EVENT_NDATA_VALID; + vcpu->run->system_event.ndata = 1; + vcpu->run->system_event.data[1] = control->ghcb_gpa; + + return 0; } default: /* Error, keep GHCB MSR value as-is */ |