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Thu, 19 Feb 2026 18:42:36 +0000 From: Date: Thu, 19 Feb 2026 10:42:34 -0800 To: Lukas Wunner , CC: Alistair Francis , Jason Gunthorpe , , , , , , , , , , , , , , , , , , Alistair Francis , , , Message-ID: <6997599a471ce_2f4a1004@dwillia2-mobl4.notmuch> In-Reply-To: References: <20260211032935.2705841-1-alistair.francis@wdc.com> <20260217235604.GA1595019@nvidia.com> <69964ddaa5471_1cc5100c3@dwillia2-mobl4.notmuch> Subject: Re: [RFC v3 00/27] lib: Rust implementation of SPDM Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: BY1P220CA0024.NAMP220.PROD.OUTLOOK.COM (2603:10b6:a03:5c3::9) To PH8PR11MB8107.namprd11.prod.outlook.com (2603:10b6:510:256::6) Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH8PR11MB8107:EE_|MW4PR11MB5822:EE_ X-MS-Office365-Filtering-Correlation-Id: d9dae410-55ba-40ff-5af8-08de6fe6a666 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|366016|376014|7416014; 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So the nearest term solution is to just wire up the existing certificate blobs retrieved by the upstream SEV-TIO driver. > This would allow upstreaming at least the three X.509 patches at the > beginning of my CMA series (and Alistair's rSPDM series) and thus > reduce the patch count a little bit. ARM CCA only needs to parse the certificates to confirm to the TSM which public-key to use. I am struggling to find another near term need for the kernel to parse the certificate. > However I don't know how far along Aneesh's CCA work is. > > Note that David Howells' introduction of ML-DSA in v7.0 moves around > a lot of the X.509 code so the three X.509 patches for CMA will no longer > apply cleanly: > > https://lore.kernel.org/all/2977832.1770384806@warthog.procyon.org.uk/ > > I'll rebase my development branch after v7.0-rc1 is out and Aneesh can > then pick up the latest version from it: > > https://github.com/l1k/linux/commits/doe Sounds good, but I want to focus on the blob dump interface for the existing upstream SPDM requester, SEV-TIO, and then go from there.