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

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Date:   Tue, 28 Jun 2022 12:58:17 -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,
        Stefan Berger <stefanb@...ux.ibm.com>
Subject: [PATCH v3 0/3] tpm: Preserve TPM measurement log across kexec (ppc64)

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

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

-- 
2.35.1