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 smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 70FB1C433EF for ; Wed, 23 Feb 2022 17:45:21 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id 24C528141A; Wed, 23 Feb 2022 17:45:21 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id smRWnuh0pZKD; Wed, 23 Feb 2022 17:45:20 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id 192E18139C; Wed, 23 Feb 2022 17:45:20 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0117FC001A; Wed, 23 Feb 2022 17:45:20 +0000 (UTC) Received: from smtp3.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 5C61EC0011 for ; Wed, 23 Feb 2022 17:45:19 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp3.osuosl.org (Postfix) with ESMTP id 4B7D360D74 for ; Wed, 23 Feb 2022 17:45:19 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Authentication-Results: smtp3.osuosl.org (amavisd-new); dkim=pass (2048-bit key) header.d=intel.com Received: from smtp3.osuosl.org ([127.0.0.1]) by localhost (smtp3.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3nB8PQ4AdZwa for ; Wed, 23 Feb 2022 17:45:18 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by smtp3.osuosl.org (Postfix) with ESMTPS id 827D7600CC for ; Wed, 23 Feb 2022 17:45:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1645638318; x=1677174318; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=aeb0qt4wCCz7I/mFg9ArXVeLtAeRSHAS90P4rnXgYoM=; b=fLaE1VRyF54q4q+9xEdC2RvHffs+9HUjINYIimaRYKqdp7yfkN9fo62I poeUUmds354sVOZNctSmR3yVEc4RW6lPJSoC5GX3l+vErRrIGUlDj/8AV ZWj/3blCNao8HM+1LPcGhNSiDA1OsgKQDLsJlZvT8aCRGxpZMS/cs8d0n nEhxvzOR6+2M7B/gGtJb/NAbfIc3f5lVNZShP/iY1OshI8DqXpQdPTumo MAbpqsQaylmVIfKC0JJYFgIdf+b8ZTB0wJqns3IHCj9FKaodooTgXcv1B Us7F0fsbtiSpUhie71gaYUvbEaeXOxToYGy5rBQc1DHhuZo4wScEswsjr Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10267"; a="232659135" X-IronPort-AV: E=Sophos;i="5.88,391,1635231600"; d="scan'208";a="232659135" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2022 09:45:17 -0800 X-IronPort-AV: E=Sophos;i="5.88,391,1635231600"; d="scan'208";a="491292157" Received: from chakanog-mobl.amr.corp.intel.com (HELO [10.212.198.215]) ([10.212.198.215]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2022 09:45:17 -0800 Message-ID: <04080c88-3e69-b4e6-0af2-0690accaa02f@intel.com> Date: Wed, 23 Feb 2022 09:45:12 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: [PATCH v5 00/12] x86: Trenchboot secure dynamic launch Linux kernel support Content-Language: en-US To: Ross Philipson , linux-kernel@vger.kernel.org, x86@kernel.org, linux-integrity@vger.kernel.org, linux-doc@vger.kernel.org, linux-crypto@vger.kernel.org, kexec@lists.infradead.org References: <1645070085-14255-1-git-send-email-ross.philipson@oracle.com> From: Dave Hansen In-Reply-To: <1645070085-14255-1-git-send-email-ross.philipson@oracle.com> Cc: dpsmith@apertussolutions.com, nivedita@alum.mit.edu, luto@amacapital.net, iommu@lists.linux-foundation.org, mingo@redhat.com, bp@alien8.de, hpa@zytor.com, kanth.ghatraju@oracle.com, tglx@linutronix.de, trenchboot-devel@googlegroups.com X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 2/16/22 19:54, 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. What problem is this patch series solving? Is the same problem solved in a different way in the kernel today? What is wrong with that solution? What effects will end users see if they apply this series? _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu