Re: [RFC PATCH 0/4] Alternative TPM patches for Trenchboot

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On 11/2/24 8:22 AM, Jarkko Sakkinen wrote:
This is my alternative patch set to the TPM patches included into
Trenchboot series v11. I don't mind to which tree these are
picked in the end. All the patches also have my sob's, so in that
sense things are also cleared up.

At least slmodule needs to be patched in the series given that
tpm_chip_set_locality() returns zero on success.

It is not really my problem but I'm also wondering how the
initialization order is managed. What if e.g. IMA happens to
initialize before slmodule?

Cc: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx>
Cc: Ross Philipson <ross.philipson@xxxxxxxxxx>
Cc: Ard Biesheuvel <ardb@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Daniel P. Smith (2):
   tpm, tpm_tis: Close all localities
   tpm, tpm_tis: Address positive localities in
     tpm_tis_request_locality()

Ross Philipson (2):
   tpm, tpm_tis: allow to set locality to a different value
   tpm: sysfs: Show locality used by kernel

  drivers/char/tpm/tpm-chip.c     | 33 ++++++++++++++++++++++++++++++++-
  drivers/char/tpm/tpm-sysfs.c    | 10 ++++++++++
  drivers/char/tpm/tpm_tis_core.c | 18 ++++++++++++++++--
  include/linux/tpm.h             | 10 ++++++++++
  4 files changed, 68 insertions(+), 3 deletions(-)


Jarkko,

Thank you for your efforts here - we appreciate it. I am testing your proposed patch set to see if it meets our needs and if we don't run into the earlier problem of leaving the TPM in a bad state when kexec'ing the next kernel.

Ross




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