From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 AB9E38821; Thu, 6 Jun 2024 06:02:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717653768; cv=none; b=tp0dkdqCZqvm3hfJBBZw1GwZDbFLvxy5/8B+sZMLm7CQ5sA4e1QLdpIIrm1w5ob1ko6i/K/yH2SKO1dP4qohN3BwWps5D/8jHJSOZ0+hmy+dK3x+tOu6lE20gm24t2Wp5C1LvRM8uHrZGwIENd0Jl9moWMYTKCeyuKyKKf8pT9g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717653768; c=relaxed/simple; bh=+N73ZoMcTU2eT6S1zwH3KuWbb697R2JF/05UDlnStFg=; h=Mime-Version:Content-Type:Date:Message-Id:Cc:Subject:From:To: References:In-Reply-To; b=OMfZD5R4DfDjBhp1qXw7CkgBO1rS4HyVckVeX+3uou26oE6iLXHoBUIzG2hWabf8yIUyPN8LCuBy+yPgxj/CAtOVJH9LpuVoD5RScqNgrS7NOrkEVuBgKQxs8NEBdTIsh2dG7D5FjDI2lGhSrsBS76wq7baricMvEyNTXW/uoQ8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZmLynZHb; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZmLynZHb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C9185C2BD10; Thu, 6 Jun 2024 06:02:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717653768; bh=+N73ZoMcTU2eT6S1zwH3KuWbb697R2JF/05UDlnStFg=; h=Date:Cc:Subject:From:To:References:In-Reply-To:From; b=ZmLynZHbI6+wxCoH1qsyPjAEaqVNs7ObvEwVHIw3vJZfJHIwRxJfcf9FU3FL6NEEi g9yD4HLhAw0LoywOGsYjq7bj/p6fVvb66y+JJBELnB9P9WEGYvqEaCXlDEachSbGHA FRaf5sPKiic7EiwGrHG5hgacpnqiYn4ByHic1mk3NhtPrm61IpuUiVVO4X4U7s04ud GWGcjFMk85/3uLd6E8wEDOs9t3QNJ7LCJGI6cZyTTZ7CLOmIbPrLmc0PYZ3FpQL6R4 mmbSZBbf9uHeBP9BxtYYUfhCFOxhy9eo/RtlsfNXBCA7SAb0aoSLB7LZDYGzuDJ59Y n/Am9dYvkU9Kg== Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Thu, 06 Jun 2024 09:02:39 +0300 Message-Id: Cc: , , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v9 04/19] x86: Secure Launch Resource Table header file From: "Jarkko Sakkinen" To: , , , , , , , , X-Mailer: aerc 0.17.0 References: <20240531010331.134441-1-ross.philipson@oracle.com> <20240531010331.134441-5-ross.philipson@oracle.com> <1eca8cb1-4b3b-402b-993b-53de7c810016@oracle.com> <249a9b27-c18d-4377-8b51-9bc610b53a8b@oracle.com> In-Reply-To: On Wed Jun 5, 2024 at 10:03 PM EEST, wrote: > So I did not mean to imply that DRTM support on various=20 > platforms/architectures has a short expiration date. In fact we are=20 > actively working on DRTM support through the TrenchBoot project on=20 > several platforms/architectures. Just a quick rundown here: > > Intel: Plenty of Intel platforms are vPro with TXT. It is really just=20 > the lower end systems that don't have it available (like Core i3). And=20 > my guess was wrong about x86s. You can find the spec on the page in the= =20 > following link. There is an entire subsection on SMX support on x86s and= =20 > the changes to the various GETSEC instruction leaves that were made to=20 > make it work there (see 3.15). > > https://www.intel.com/content/www/us/en/developer/articles/technical/envi= sioning-future-simplified-architecture.html Happend to bump into same PDF specification and exactly the seeked information is "3.15 SMX Changes". So just write this down to some patch that starts adding SMX things. Link: https://cdrdv2.intel.com/v1/dl/getContent/776648 So link and document, and other stuff above is not relevant from upstream context, only potential maintenance burden :-) For any architectures dig a similar fact: 1. Is not dead. 2. Will be there also in future. Make any architecture existentially relevant for and not too much coloring in the text that is easy to check. It is nearing 5k lines so you should be really good with measured facts too (not just launch) :-) BR, Jarkko