From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 55BF0E6B27C for ; Fri, 1 Nov 2024 14:04:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:References:To:From:Subject: Cc:Message-Id:Date:Mime-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=76+1EbUx2bUOPjOJQeMZv1Qf4b2HD41PO5qrfY/AeCc=; b=mJSsXtLxTehY8J YQx6rs4mTvp03B+RK0iXGah2TMZ6qasVQ6noJNr0XuKFVLxrPuEIbMBq11QpINtLXH0tzL5dvIe+D Ik6jPP+ExQnuwWw6vegaas73WDkbJtBCu89SdEKVkLzpULqIJBQOX01q2VeCTsDFWI8beBp3uX+1h GLvserTpdXMnBSQ9QL4slu86/GITt80EmAX9Ke1ZH5ex6NWqgV2IpbjVlM32ke0CzCDt6IhOk/i1Z 1PUf+qi1o6bvtGA+L4EtUtm/5LYgUv6+byPe02KhQIyk3jA3i3DNRqlIQFZTKfMqPRXxAvz1WZqgs vNtEeh4J5eeJ5mRAbdQw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t6sG6-00000007Gj4-118L; Fri, 01 Nov 2024 14:04:14 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t6s5z-00000007F6I-0PAx for kexec@bombadil.infradead.org; Fri, 01 Nov 2024 13:53:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:References:To:From:Subject :Cc:Message-Id:Date:Content-Type:Content-Transfer-Encoding:Mime-Version: Sender:Reply-To:Content-ID:Content-Description; bh=X9xZeLK5UwcmYaEmE29YjHzyiIdH+Qq0jPUQJmq0BVU=; b=lsP+WTcwS5LDXLSctSkYOxyTdR flFmtdc2KkQd89XbtbIr04eOsxikFk4BQD8e0i4DwGLdV/PhitOSSmcUykDN+mVdP/Y/r9YkMo+r+ VgQjkNqh5QsPK5ZIGQYvKlAoxRgHnkZKGfUs+jUlcw3BPq4UiG+BXMy2+xGnjGLTnW8o3z6Zp8TZd g3oyjHLOw4RlgEEouErg1UoHykk2bNcXhNJY05vgeVGIoau3CuTxMcFpojZwzR28FbZ9oA+8e5YKC sbGq21YrH10bNAe5Pm7Y3G2PhhYBeeJI2BQko1MdDcwlT5nsMC2oO0bVb9n+MI/P4N9C6Grs+CkH7 TdGUcazg==; Received: from dfw.source.kernel.org ([139.178.84.217]) by desiato.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t6s5u-0000000Ahjq-2pby for kexec@lists.infradead.org; Fri, 01 Nov 2024 13:53:45 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 4FF895CA49D; Thu, 31 Oct 2024 22:36:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 37DBCC4CEC3; Thu, 31 Oct 2024 22:37:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1730414251; bh=HfxuReQImXwvhpLuPipg5vqXGCC5//yJ2cqMYklD4uE=; h=Date:Cc:Subject:From:To:References:In-Reply-To:From; b=HkpDpmu7UAbaJtrXnkkFcec2474fvBoqy1ujDdyxLJNxpkcAbhiAXS1i+Za5t54bZ GVwE5D/p4jdo5We7G5n3MMQRMeZt1O4PwIEk3Q8dSYOvRJp80k8RjogGFcur/qZ9A4 65A4DQPqRNeJPryDCd7dZX/z2M2Qj8ilUSZb90Qw15sK2bj1m9OGio2DHx9qbloBzI 03SnuZRNrUzggGH9xeKrEfxS8fiBmLPxUjVP6p1J98HwOansT2wUsTL+V9wzx6AmkH IK4e9kIEtrcKNkxVSuQU1G4u+Vdbl9KNU2pocO2pR1bDSBN1vVB/WbCKXWURZsDZGW fsY12541kUjOQ== Mime-Version: 1.0 Date: Fri, 01 Nov 2024 00:37:27 +0200 Message-Id: Cc: , , , , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v11 00/20] x86: Trenchboot secure dynamic launch Linux kernel support From: "Jarkko Sakkinen" To: "Thomas Gleixner" , "Ross Philipson" , , , , , , , , X-Mailer: aerc 0.18.2 References: <20240913200517.3085794-1-ross.philipson@oracle.com> <87wmhoulb9.ffs@tglx> In-Reply-To: <87wmhoulb9.ffs@tglx> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241101_135343_137631_F0D061AA X-CRM114-Status: GOOD ( 25.93 ) X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Thu Oct 31, 2024 at 9:25 PM EET, Thomas Gleixner wrote: > On Fri, Sep 13 2024 at 13:04, Ross Philipson wrote: > > The larger focus of the TrenchBoot project (https://github.com/TrenchBoot) is to > > enhance the boot security and integrity in a unified manner. The first area of > > focus has been on the Trusted Computing Group's Dynamic Launch for establishing > > a hardware Root of Trust for Measurement, also know as DRTM (Dynamic Root of > > Trust for Measurement). The project has been and continues to work on providing > > a unified means to Dynamic Launch that is a cross-platform (Intel and AMD) and > > cross-architecture (x86 and Arm), with our recent involvment in the upcoming > > Arm DRTM specification. The order of introducing DRTM to the Linux kernel > > follows the maturity of DRTM in the architectures. Intel's Trusted eXecution > > Technology (TXT) is present today and only requires a preamble loader, e.g. a > > boot loader, and an OS kernel that is TXT-aware. AMD DRTM implementation has > > been present since the introduction of AMD-V but requires an additional > > component that is AMD specific and referred to in the specification as the > > Secure Loader, which the TrenchBoot project has an active prototype in > > development. Finally Arm's implementation is in specification development stage > > and the project is looking to support it when it becomes available. > > > > This patchset provides detailed documentation of DRTM, the approach used for > > adding the capbility, and relevant API/ABI documentation. In addition to the > > documentation the patch set introduces Intel TXT support as the first platform > > for Linux Secure Launch. > > So this looks pretty reasonable to me by now and I'm inclined to take it > through the tip x86 tree, but that needs reviewed/acked-by's from the > crypto and TPM folks. EFI has been reviewed already. > > Can we make progress on this please? So TPM patches do have bunch of glitches: - 15/20: I don't get this. There is nothing to report unless tree is falling. The reported-by tag literally meaningless. Maybe this is something that makes sense with this feature. Explain from that angle. - 16/20: Is this actually a bug fix? If it is should be before 15/20. - 17/20: the commit message could do a better job explaining how the locality can vary. I'm not sure how this will be used by rest of the patch set. - 18/20: I'm not confident we want to give privilege to set locality to the user space. The commit message neither makes a case of this. Has this been tested to together with bus encryption (just checking)? > > Thanks, > > tglx BR, Jarkko _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec