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Thu, 12 Feb 2026 06:42:47 -0800 (PST) X-Received: by 2002:a05:600c:4eca:b0:47e:e20e:bbb0 with SMTP id 5b1f17b1804b1-483656adec5mr45735935e9.6.1770907366469; Thu, 12 Feb 2026 06:42:46 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: Jin Liu , Michael Roth Subject: [PULL 01/41] target/i386: convert SEV-ES termination requests to guest panic events Date: Thu, 12 Feb 2026 15:42:03 +0100 Message-ID: <20260212144244.22579-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260212144244.22579-1-pbonzini@redhat.com> References: <20260212144244.22579-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1770907502731158500 Content-Type: text/plain; charset="utf-8" This produces a good error message instead of: KVM: unknown exit reason 24 EAX=3D00000000 EBX=3D00000000 ECX=3D00000000 EDX=3D00a00f11 ESI=3D00000000 EDI=3D00000000 EBP=3D00000000 ESP=3D00000000 EIP=3D0000b004 EFL=3D00000002 [-------] CPL=3D0 II=3D0 A20=3D1 SMM=3D0 HLT= =3D1 ES =3D0000 00000000 0000ffff 00009300 CS =3Df000 00800000 0000ffff 00009b00 SS =3D0000 00000000 0000ffff 00009300 DS =3D0000 00000000 0000ffff 00009300 FS =3D0000 00000000 0000ffff 00009300 GS =3D0000 00000000 0000ffff 00009300 LDT=3D0000 00000000 0000ffff 00008200 TR =3D0000 00000000 0000ffff 00008b00 GDT=3D 00000000 0000ffff IDT=3D 00000000 0000ffff CR0=3D60000010 CR2=3D00000000 CR3=3D00000000 CR4=3D00000000 DR0=3D0000000000000000 DR1=3D0000000000000000 DR2=3D0000000000000000 DR3=3D= 0000000000000000 DR6=3D00000000ffff0ff0 DR7=3D0000000000000400 EFER=3D0000000000000000 Code=3D00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 = 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 = 00 00 00 Reported-by: Jin Liu Cc: Michael Roth Signed-off-by: Paolo Bonzini --- qapi/run-state.json | 23 +++++++++++++++++++++-- accel/kvm/kvm-all.c | 1 + system/runstate.c | 4 ++++ target/i386/cpu-system.c | 22 ++++++++++++++++++++++ 4 files changed, 48 insertions(+), 2 deletions(-) diff --git a/qapi/run-state.json b/qapi/run-state.json index a6bc94a44bb..a5771ad4681 100644 --- a/qapi/run-state.json +++ b/qapi/run-state.json @@ -504,10 +504,12 @@ # # @tdx: tdx guest panic information type (Since: 10.1) # +# @sev: AMD SEV-ES guest termination information type (Since: 11.0) +# # Since: 2.9 ## { 'enum': 'GuestPanicInformationType', - 'data': [ 'hyper-v', 's390', 'tdx' ] } + 'data': [ 'hyper-v', 's390', 'tdx', 'sev' ] } =20 ## # @GuestPanicInformation: @@ -523,7 +525,8 @@ 'discriminator': 'type', 'data': {'hyper-v': 'GuestPanicInformationHyperV', 's390': 'GuestPanicInformationS390', - 'tdx' : 'GuestPanicInformationTdx'}} + 'tdx': 'GuestPanicInformationTdx', + 'sev': 'GuestPanicInformationSev' }} =20 ## # @GuestPanicInformationHyperV: @@ -625,6 +628,22 @@ 'message': 'str', '*gpa': 'uint64'}} =20 +## +# @GuestPanicInformationSev: +# +# Information for AMD SEV-specific termination request (GHCB MSR +# contents) +# +# @set: The reason code set provided by the guest +# +# @code: The reason code provided by the guest +# +# Since: 11.0 +## +{'struct': 'GuestPanicInformationSev', + 'data': {'set': 'uint32', + 'code': 'uint32'}} + ## # @MEMORY_FAILURE: # diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 8301a512e7f..0d8b0c43470 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -3300,6 +3300,7 @@ int kvm_cpu_exec(CPUState *cpu) qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET); ret =3D EXCP_INTERRUPT; break; + case KVM_SYSTEM_EVENT_SEV_TERM: case KVM_SYSTEM_EVENT_CRASH: kvm_cpu_synchronize_state(cpu); bql_lock(); diff --git a/system/runstate.c b/system/runstate.c index ed2db564806..d091a2bdddb 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -669,6 +669,10 @@ void qemu_system_guest_panicked(GuestPanicInformation = *info) "can be found at gpa page: 0x%" PRIx64 "\n", info->u.tdx.gpa); } + } else if (info->type =3D=3D GUEST_PANIC_INFORMATION_TYPE_SEV) { + qemu_log_mask(LOG_GUEST_ERROR, "SEV termination (reason set: %= d code: %d)", + info->u.sev.set, + info->u.sev.code); } =20 qapi_free_GuestPanicInformation(info); diff --git a/target/i386/cpu-system.c b/target/i386/cpu-system.c index b1494aa6740..c8bbf0cbafd 100644 --- a/target/i386/cpu-system.c +++ b/target/i386/cpu-system.c @@ -18,6 +18,8 @@ */ =20 #include "qemu/osdep.h" +#include "qemu/error-report.h" +#include "system/kvm.h" #include "cpu.h" #include "qapi/error.h" #include "qapi/qapi-visit-run-state.h" @@ -272,6 +274,26 @@ GuestPanicInformation *x86_cpu_get_crash_info(CPUState= *cs) CPUX86State *env =3D &cpu->env; GuestPanicInformation *panic_info =3D NULL; =20 +#ifdef CONFIG_KVM + if (kvm_enabled()) { + struct kvm_run *run =3D cs->kvm_run; + + if (run->exit_reason =3D=3D KVM_EXIT_SYSTEM_EVENT && + run->system_event.type =3D=3D KVM_SYSTEM_EVENT_SEV_TERM) { + panic_info =3D g_new0(GuestPanicInformation, 1); + + panic_info->type =3D GUEST_PANIC_INFORMATION_TYPE_SEV; + /* There should always be one data item, otherwise use zeroes.= */ + if (run->system_event.ndata > 0) { + panic_info->u.sev.set =3D (run->system_event.data[0] >> 12= ) & 0xf; + panic_info->u.sev.code =3D (run->system_event.data[0] >> 1= 6) & 0xff; + } else { + warn_report("Hypervisor did not provide any data for SEV-E= S termination"); + } + } + } else +#endif + if (hyperv_feat_enabled(cpu, HYPERV_FEAT_CRASH)) { panic_info =3D g_new0(GuestPanicInformation, 1); =20 --=20 2.52.0