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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210112144248.GA256955@robh.at.kernel.org> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210112_132304_907384_5706A433 X-CRM114-Status: GOOD ( 27.77 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, benh@kernel.crashing.org, bhsharma@redhat.com, tao.li@vivo.com, zohar@linux.ibm.com, paulus@samba.org, vincenzo.frascino@arm.com, frowand.list@gmail.com, sashal@kernel.org, mpe@ellerman.id.au, masahiroy@kernel.org, jmorris@namei.org, takahiro.akashi@linaro.org, linux-arm-kernel@lists.infradead.org, catalin.marinas@arm.com, serge@hallyn.com, devicetree@vger.kernel.org, pasha.tatashin@soleen.com, will@kernel.org, prsriva@linux.microsoft.com, hsinyi@chromium.org, allison@lohutok.net, christophe.leroy@c-s.fr, mbrugger@suse.com, balajib@linux.microsoft.com, dmitry.kasatkin@gmail.com, linux-kernel@vger.kernel.org, james.morse@arm.com, gregkh@linuxfoundation.org, linux-integrity@vger.kernel.org, bauerman@linux.ibm.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 1/12/21 6:42 AM, 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. Thanks for reviewing the patches Rob. Sure - I'll add your patches to this series. > I would like to also resolve the vmalloc vs. kmalloc difference for > allocating the FDT. Then we can further consolidate the DT kexec code. I think FDT allocation using vmalloc for ARM64 can be changed to kmalloc. What are the other changes you'd like me to do in arm64/powerpc DT kexec code in this patch series? @AKASHI Takahiro - could you please let me know if the above sounds right? > > It all needs some acks from arm64 and powerpc maintainers. As far as > merging, I think via the integrity tree makes the most sense. I'll create the patch series in "next-integrity" branch. Thiago/Mimi have acked some of the patches. Please review the remaining patches in this version. Could arm64 maintainers please review the patches and respond? thanks, -lakshmi _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel