From: Thiago Jung Bauermann <bauerman@linux.ibm.com>
To: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Cc: zohar@linux.ibm.com, robh@kernel.org, gregkh@linuxfoundation.org,
james.morse@arm.com, catalin.marinas@arm.com, sashal@kernel.org,
will@kernel.org, mpe@ellerman.id.au, benh@kernel.crashing.org,
paulus@samba.org, robh+dt@kernel.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,
kstewart@linuxfoundation.org, takahiro.akashi@linaro.org,
tglx@linutronix.de, masahiroy@kernel.org, bhsharma@redhat.com,
mbrugger@suse.com, hsinyi@chromium.org, tao.li@vivo.com,
christophe.leroy@c-s.fr, linux-integrity@vger.kernel.org,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
prsriva@linux.microsoft.com, balajib@linux.microsoft.com
Subject: Re: [PATCH v6 3/3] arm64: Add IMA kexec buffer to DTB
Date: Sat, 12 Sep 2020 00:23:49 -0300 [thread overview]
Message-ID: <87363nu18a.fsf@morokweng.localdomain> (raw)
In-Reply-To: <20200908230856.9799-4-nramas@linux.microsoft.com>
Lakshmi Ramasubramanian <nramas@linux.microsoft.com> writes:
> Any existing FDT_PROP_IMA_KEXEC_BUFFER property in the device tree
> needs to be removed and its corresponding memory reservation in
> the currently running kernel needs to be freed.
>
> The address and size of the current kernel's IMA measurement log need
> to be added to the device tree's IMA kexec buffer node and memory for
> the buffer needs to be reserved for the log to be carried over to
> the next kernel on the kexec call.
>
> Remove any existing FDT_PROP_IMA_KEXEC_BUFFER property in the device
> tree and free the corresponding memory reservation in the currently
> running kernel. Add FDT_PROP_IMA_KEXEC_BUFFER property to the device
> tree and reserve the memory for storing the IMA log.
> Update CONFIG_KEXEC_FILE to select CONFIG_HAVE_IMA_KEXEC to indicate
> that the IMA measurement log information is present in the device tree
> for ARM64.
>
> Co-developed-by: Prakhar Srivastava <prsriva@linux.microsoft.com>
> Signed-off-by: Prakhar Srivastava <prsriva@linux.microsoft.com>
> Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Reviewed-by: Thiago Jung Bauermann <bauerman@linux.ibm.com>
--
Thiago Jung Bauermann
IBM Linux Technology Center
next prev parent reply other threads:[~2020-09-12 3:24 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-08 23:08 [PATCH v6 0/3] Carry forward IMA measurement log on kexec on ARM64 Lakshmi Ramasubramanian
2020-09-08 23:08 ` [PATCH v6 1/3] powerpc: Refactor kexec functions to move arch independent code to IMA Lakshmi Ramasubramanian
2020-09-12 3:18 ` Thiago Jung Bauermann
2020-09-08 23:08 ` [PATCH v6 2/3] arm64: Store IMA log information in kimage used for kexec Lakshmi Ramasubramanian
2020-09-08 23:08 ` [PATCH v6 3/3] arm64: Add IMA kexec buffer to DTB Lakshmi Ramasubramanian
2020-09-12 3:23 ` Thiago Jung Bauermann [this message]
2020-09-23 20:03 ` [PATCH v6 0/3] Carry forward IMA measurement log on kexec on ARM64 Mimi Zohar
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