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

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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




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