From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: Mimi Zohar <zohar@linux.ibm.com>
Cc: mark.rutland@arm.com, benh@kernel.crashing.org,
bhsharma@redhat.com, tao.li@vivo.com, paulus@samba.org,
vincenzo.frascino@arm.com, frowand.list@gmail.com,
sashal@kernel.org, takahiro.akashi@linaro.org,
mpe@ellerman.id.au, masahiroy@kernel.org, jmorris@namei.org,
Lakshmi Ramasubramanian <nramas@linux.microsoft.com>,
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
Subject: Re: [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64
Date: Tue, 12 Jan 2021 15:45:08 -0300 [thread overview]
Message-ID: <87eeiqro3v.fsf@manicouagan.localdomain> (raw)
In-Reply-To: <601825013d67584b0d2de7a973b806ec3cbc05ca.camel@linux.ibm.com>
Mimi Zohar <zohar@linux.ibm.com> writes:
> 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.
Also please update the powerpc mailing list address to
linuxppc-dev@lists.ozlabs.org
--
Thiago Jung Bauermann
IBM Linux Technology Center
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linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-12 18:47 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-04 19:25 [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64 Lakshmi Ramasubramanian
2021-01-04 19:25 ` [PATCH v14 1/6] ima: Move arch_ima_add_kexec_buffer() to ima Lakshmi Ramasubramanian
2021-01-04 19:25 ` [PATCH v14 2/6] powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c Lakshmi Ramasubramanian
2021-01-13 2:14 ` Thiago Jung Bauermann
2021-01-04 19:25 ` [PATCH v14 3/6] kexec: Use fdt_appendprop_addrrange() to add ima buffer to FDT Lakshmi Ramasubramanian
2021-01-04 19:26 ` [PATCH v14 4/6] powerpc: Delete unused functions Lakshmi Ramasubramanian
2021-01-12 23:30 ` Mimi Zohar
2021-01-12 23:57 ` Lakshmi Ramasubramanian
2021-01-13 2:15 ` Thiago Jung Bauermann
2021-01-04 19:26 ` [PATCH v14 5/6] arm64: Free DTB buffer if fdt_open_into() fails Lakshmi Ramasubramanian
2021-01-04 19:26 ` [PATCH v14 6/6] arm64: Add IMA log information in kimage used for kexec Lakshmi Ramasubramanian
2021-01-12 23:28 ` Mimi Zohar
2021-01-12 23:54 ` Lakshmi Ramasubramanian
2021-01-13 2:16 ` Thiago Jung Bauermann
2021-01-12 14:42 ` [PATCH v14 0/6] Carry forward IMA measurement log on kexec on ARM64 Rob Herring
2021-01-12 18:05 ` Mimi Zohar
2021-01-12 18:24 ` Lakshmi Ramasubramanian
2021-01-12 18:45 ` Thiago Jung Bauermann [this message]
2021-01-12 18:23 ` Lakshmi Ramasubramanian
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