From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bmailout2.hostsharing.net (bmailout2.hostsharing.net [83.223.78.240]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AF8E533A9ED; Thu, 19 Feb 2026 09:13:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=83.223.78.240 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771492437; cv=none; b=rjDjtdHL5ieDsmllRIGj3DXJ9nCFE2vqxBBnGR+xTTqWE81yTTRIwpLMuy5PWeWRRpqSH3Ls8x0VJSs3QWq8ZC+bFC4OzmlERLriQbHKUBv+p4IDilGTbbkXEzdO39DnoqdDlprX6nmJLJXjNlXgbpG0htH/l73Jz0kE/bXSzwo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771492437; c=relaxed/simple; bh=gh8WIMy4GOJKBZ0m6I6h9UqYVLePX6Dtn1gEFMYmy+w=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SDpF/Jwn2YZvF9tuYnbz8I7Im5OMTL28qx59n5Hv9x7v7K3JB+mbMSYAUsas3CH0C9MpSR4ZQsUSAUG/CU8GLxXYB7H4s8qmzVRAlamukER0PkEBW32HSMTtggAahrUx5TITdS9GdjuEyaFnjugxORkJKqBW6tDE7WnNp0KOILE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=none smtp.mailfrom=h08.hostsharing.net; arc=none smtp.client-ip=83.223.78.240 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=h08.hostsharing.net Received: from h08.hostsharing.net (h08.hostsharing.net [83.223.95.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384 client-signature ECDSA (secp384r1) client-digest SHA384) (Client CN "*.hostsharing.net", Issuer "GlobalSign GCC R6 AlphaSSL CA 2025" (verified OK)) by bmailout2.hostsharing.net (Postfix) with ESMTPS id 5CFBF2021BF3; Thu, 19 Feb 2026 10:13:47 +0100 (CET) Received: by h08.hostsharing.net (Postfix, from userid 100393) id 38B094AAE6; Thu, 19 Feb 2026 10:13:47 +0100 (CET) Date: Thu, 19 Feb 2026 10:13:47 +0100 From: Lukas Wunner To: dan.j.williams@intel.com Cc: Alistair Francis , Jason Gunthorpe , bhelgaas@google.com, rust-for-linux@vger.kernel.org, akpm@linux-foundation.org, linux-pci@vger.kernel.org, Jonathan.Cameron@huawei.com, linux-cxl@vger.kernel.org, linux-kernel@vger.kernel.org, alex.gaynor@gmail.com, benno.lossin@proton.me, boqun.feng@gmail.com, a.hindborg@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, tmgross@umich.edu, ojeda@kernel.org, wilfred.mallawa@wdc.com, aliceryhl@google.com, Alistair Francis , aneesh.kumar@kernel.org, yilun.xu@linux.intel.com, aik@amd.com Subject: Re: [RFC v3 00/27] lib: Rust implementation of SPDM Message-ID: References: <20260211032935.2705841-1-alistair.francis@wdc.com> <20260217235604.GA1595019@nvidia.com> <69964ddaa5471_1cc5100c3@dwillia2-mobl4.notmuch> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <69964ddaa5471_1cc5100c3@dwillia2-mobl4.notmuch> On Wed, Feb 18, 2026 at 03:40:10PM -0800, dan.j.williams@intel.com wrote: > However, I notice that Aneesh needs x509 certificate parsing for his TSM > driver [1], I think TDX would benefit from the same to offload needing > to specify the wall-clock time to the module [2] for cert verification, > and SEV-TIO (already upstream) is currently missing any facility for the > host to attest the device. > > [1]: http://lore.kernel.org/20250728135216.48084-17-aneesh.kumar@kernel.org There's a newer version: https://lore.kernel.org/all/20251027095602.1154418-1-aneesh.kumar@kernel.org/ 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. 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 Thanks, Lukas