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Date: Fri, 25 Mar 2022 09:31:59 -0600 From: Peter Gonda <pgonda@...gle.com> To: Paolo Bonzini <pbonzini@...hat.com> Cc: kvm list <kvm@...r.kernel.org>, Borislav Petkov <bp@...en8.de>, Tom Lendacky <thomas.lendacky@....com>, Brijesh Singh <brijesh.singh@....com>, Joerg Roedel <jroedel@...e.de>, Marc Orr <marcorr@...gle.com>, Sean Christopherson <seanjc@...gle.com>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v2] Add KVM_EXIT_SHUTDOWN metadata for SEV-ES On Fri, Mar 25, 2022 at 9:29 AM Paolo Bonzini <pbonzini@...hat.com> wrote: > > On 3/25/22 16:27, Peter Gonda wrote: > > SEV-ES guests can request termination using the GHCB's MSR protocol. See > > AMD's GHCB spec section '4.1.13 Termination Request'. Currently when a > > guest does this the userspace VMM sees an KVM_EXIT_UNKNOWN (-EVINAL) > > return code from KVM_RUN. By adding a KVM_EXIT_SHUTDOWN_ENTRY to kvm_run > > struct the userspace VMM can clear see the guest has requested a SEV-ES > > termination including the termination reason code set and reason code. > > > > Signed-off-by: Peter Gonda <pgonda@...gle.com> > > Cc: Paolo Bonzini <pbonzini@...hat.com> > > Cc: Borislav Petkov <bp@...en8.de> > > Cc: Tom Lendacky <thomas.lendacky@....com> > > Cc: Brijesh Singh <brijesh.singh@....com> > > Cc: Joerg Roedel <jroedel@...e.de> > > Cc: Marc Orr <marcorr@...gle.com> > > Cc: Sean Christopherson <seanjc@...gle.com> > > Cc: kvm@...r.kernel.org > > Cc: linux-kernel@...r.kernel.org > > This is missing an update to Documentation/. > My mistake. I'll send another revision. Is the behavior of KVM_CAP_EXIT_SHUTDOWN_REASON OK? Or should we only return 1 for SEV-ES guests?
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