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Tue, 24 Feb 2026 19:52:04 -0800 (PST) X-Received: by 2002:a05:6a21:681:b0:393:c4d:be49 with SMTP id adf61e73a8af0-39545e1b364mr11114136637.2.1771991524092; Tue, 24 Feb 2026 19:52:04 -0800 (PST) Received: from rhel9-box.lan ([122.176.129.56]) by smtp.googlemail.com with ESMTPSA id 98e67ed59e1d1-359018838b2sm1186006a91.5.2026.02.24.19.52.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Feb 2026 19:52:03 -0800 (PST) From: Ani Sinha To: Paolo Bonzini , =?UTF-8?q?Daniel=20P=2E=20Berrang=C3=A9?= , Eduardo Habkost , Eric Blake , Markus Armbruster Cc: Ani Sinha , kraxel@redhat.com, ani@anisinha.ca, qemu-devel@nongnu.org Subject: [PATCH v6 34/35] qom: add 'confidential-guest-reset' property for x86 confidential vms Date: Wed, 25 Feb 2026 09:19:39 +0530 Message-ID: <20260225035000.385950-35-anisinha@redhat.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20260225035000.385950-1-anisinha@redhat.com> References: <20260225035000.385950-1-anisinha@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.129.124; envelope-from=anisinha@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 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=0.358, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.659, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Through the new 'confidential-guest-reset' property, control plane should be able to detect if the hypervisor supports x86 confidential guest resets. Older hypervisors that do not support resets will not have this property populated. Suggested-by: Daniel P. Berrangé Reviewed-by: Markus Armbruster Reviewed-by: Daniel P. Berrangé Signed-off-by: Ani Sinha --- qapi/qom.json | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/qapi/qom.json b/qapi/qom.json index 6f5c9de0f0..c653248f85 100644 --- a/qapi/qom.json +++ b/qapi/qom.json @@ -1009,13 +1009,19 @@ # designated guest firmware page for measured boot with -kernel # (default: false) (since 6.2) # +# Features: +# +# @confidential-guest-reset: If present, the hypervisor supports +# confidential guest resets (since 11.0). +# # Since: 9.1 ## { 'struct': 'SevCommonProperties', 'data': { '*sev-device': 'str', '*cbitpos': 'uint32', 'reduced-phys-bits': 'uint32', - '*kernel-hashes': 'bool' } } + '*kernel-hashes': 'bool' }, + 'features': ['confidential-guest-reset']} ## # @SevGuestProperties: @@ -1136,6 +1142,11 @@ # it, the guest will not be able to get a TD quote for # attestation. # +# Features: +# +# @confidential-guest-reset: If present, the hypervisor supports +# confidential guest resets (since 11.0). +# # Since: 10.1 ## { 'struct': 'TdxGuestProperties', @@ -1144,7 +1155,8 @@ '*mrconfigid': 'str', '*mrowner': 'str', '*mrownerconfig': 'str', - '*quote-generation-socket': 'SocketAddress' } } + '*quote-generation-socket': 'SocketAddress' }, + 'features': ['confidential-guest-reset']} ## # @ThreadContextProperties: -- 2.42.0