linux-kernel - Re: [PATCH v3 0/3] tpm: Preserve TPM measurement log across kexec (ppc64)

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Date:   Tue, 28 Jun 2022 13:25:13 -0400
From:   Stefan Berger <stefanb@...ux.ibm.com>
To:     kexec@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Cc:     nayna@...ux.ibm.com, nasastry@...ibm.com, mpe@...erman.id.au
Subject: Re: [PATCH v3 0/3] tpm: Preserve TPM measurement log across kexec
 (ppc64)

On 6/28/22 12:58, Stefan Berger wrote:
> The of-tree subsystem does not currently preserve the IBM vTPM 1.2 and
> vTPM 2.0 measurement logs across a kexec on ppc64. This series fixes this
> for the kexec_file_load() syscall using the flattened device tree (fdt) to
> carry the measurement log's buffer across kexec.
> 
>     Stefan
> 

v3:
  - Moved TPM Open Firmware related function to 
drivers/char/tpm/eventlog/tpm_of.c

v2:
  - rearranged patches
  - fixed compilation issues for x86


> Stefan Berger (3):
>    tpm: of: Make of-tree specific function commonly available
>    of: kexec: Refactor IMA buffer related functions to make them reusable
>    tpm/kexec: Duplicate TPM measurement log in of-tree for kexec
> 
>   drivers/char/Makefile              |   1 +
>   drivers/char/tpm/Makefile          |   1 +
>   drivers/char/tpm/eventlog/of.c     |  31 +--
>   drivers/char/tpm/eventlog/tpm_of.c |  27 +++
>   drivers/of/kexec.c                 | 293 +++++++++++++++++++++++++----
>   include/linux/kexec.h              |   6 +
>   include/linux/of.h                 |   8 +-
>   include/linux/tpm.h                |   5 +
>   kernel/kexec_file.c                |   6 +
>   9 files changed, 315 insertions(+), 63 deletions(-)
>   create mode 100644 drivers/char/tpm/eventlog/tpm_of.c
>