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 X-Spam-Level: X-Spam-Status: No, score=-19.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9F9EC433E9 for ; Tue, 12 Jan 2021 18:25:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A79C52310E for ; Tue, 12 Jan 2021 18:25:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404378AbhALSY5 (ORCPT ); Tue, 12 Jan 2021 13:24:57 -0500 Received: from linux.microsoft.com ([13.77.154.182]:34750 "EHLO linux.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391199AbhALSY5 (ORCPT ); Tue, 12 Jan 2021 13:24:57 -0500 Received: from [192.168.0.104] (c-73-42-176-67.hsd1.wa.comcast.net [73.42.176.67]) by linux.microsoft.com (Postfix) with ESMTPSA id 4B82D20B6C40; Tue, 12 Jan 2021 10:24:15 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 4B82D20B6C40 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1610475856; bh=kqMBWN+x15udzdBrDVysSjGa/JtllSC2mi1dYfiqcNg=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=nz/lGdJ+VWGYcVJUzrRnQ/az6wTlrhlZD8nWstDbHaQepPqr9axhkTjLvU2iJHRDn JVSPiih3sfLNuT8GCEseCc89XcB+adnkVp5jeUoTKL/Sh7NJe5Ky613ket7v01ctTN HacFyxSKKrhVYb6q79LK5W5ANUSlLNEcMeF8r6CI= Subject: Re: [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64 To: Mimi Zohar , Rob Herring Cc: bauerman@linux.ibm.com, takahiro.akashi@linaro.org, gregkh@linuxfoundation.org, will@kernel.org, catalin.marinas@arm.com, mpe@ellerman.id.au, james.morse@arm.com, sashal@kernel.org, benh@kernel.crashing.org, paulus@samba.org, frowand.list@gmail.com, vincenzo.frascino@arm.com, mark.rutland@arm.com, dmitry.kasatkin@gmail.com, jmorris@namei.org, serge@hallyn.com, pasha.tatashin@soleen.com, allison@lohutok.net, masahiroy@kernel.org, bhsharma@redhat.com, mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com, christophe.leroy@c-s.fr, prsriva@linux.microsoft.com, balajib@linux.microsoft.com, linux-integrity@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linuxppc-dev@vger.kernel.org References: <20210104192602.10131-1-nramas@linux.microsoft.com> <20210112144248.GA256955@robh.at.kernel.org> <601825013d67584b0d2de7a973b806ec3cbc05ca.camel@linux.ibm.com> From: Lakshmi Ramasubramanian Message-ID: <14f80991-92db-68ec-7c60-5f868a9bd57a@linux.microsoft.com> Date: Tue, 12 Jan 2021 10:24:14 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <601825013d67584b0d2de7a973b806ec3cbc05ca.camel@linux.ibm.com> Content-Type: text/plain; charset=iso-8859-15; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-integrity@vger.kernel.org On 1/12/21 10:05 AM, Mimi Zohar wrote: > On Tue, 2021-01-12 at 08:42 -0600, Rob Herring wrote: >> On Mon, Jan 04, 2021 at 11:25:56AM -0800, Lakshmi Ramasubramanian wrote: >>> On kexec file load Integrity Measurement Architecture (IMA) subsystem >>> may verify the IMA signature of the kernel and initramfs, and measure >>> it. The command line parameters passed to the kernel in the kexec call >>> may also be measured by IMA. A remote attestation service can verify >>> a TPM quote based on the TPM event log, the IMA measurement list, and >>> the TPM PCR data. This can be achieved only if the IMA measurement log >>> is carried over from the current kernel to the next kernel across >>> the kexec call. >>> >>> powerpc already supports carrying forward the IMA measurement log on >>> kexec. This patch set adds support for carrying forward the IMA >>> measurement log on kexec on ARM64. >>> >>> This patch set moves the platform independent code defined for powerpc >>> such that it can be reused for other platforms as well. A chosen node >>> "linux,ima-kexec-buffer" is added to the DTB for ARM64 to hold >>> the address and the size of the memory reserved to carry >>> the IMA measurement log. >>> >>> This patch set has been tested for ARM64 platform using QEMU. >>> I would like help from the community for testing this change on powerpc. >>> Thanks. >>> >>> This patch set is based on >>> commit a29a64445089 ("powerpc: Use common of_kexec_setup_new_fdt()") >>> in https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git >>> "dt/kexec" branch. >> >> This all looks good to me. I'd suggest you send the above patches out as >> part of this series because I don't plan to do so. >> >> I would like to also resolve the vmalloc vs. kmalloc difference for >> allocating the FDT. Then we can further consolidate the DT kexec code. >> >> It all needs some acks from arm64 and powerpc maintainers. As far as >> merging, I think via the integrity tree makes the most sense. > > Thanks, Rob. Lakshmi, please update Rob's patches to include patch > descriptions before re-posting. > Will do Mimi. thanks, -lakshmi