[PATCH 0/3] Address !chip->auth

[Michael Ellerman]

"Jarkko Sakkinen" <jarkko at kernel.org> writes:
> On Wed Jul 3, 2024 at 8:08 PM EEST, Jarkko Sakkinen wrote:
>> Tested on x86-64 with:
>>
>> - TCG_TPM2_HMAC disabled.
>> - TCG_TPM2_HMAC enabled.
>> - TCG_TPM2_HMAC enabled, and "/* rc = tpm2_sessions_init(chip); */".
>>
>> Jarkko Sakkinen (3):
>>   tpm: Address !chip->auth in tpm2_*_auth_session()
>>   tpm: Address !chip->auth in tpm_buf_append_name()
>>   tpm: Address !chip->auth in tpm_buf_append_hmac_session*()
>>
>>  drivers/char/tpm/Makefile        |   2 +-
>>  drivers/char/tpm/tpm2-sessions.c | 400 +++++++++++++++++--------------
>>  include/linux/tpm.h              |  75 ++----
>>  3 files changed, 245 insertions(+), 232 deletions(-)
>
> Aiming these still to 6.10 so that there would not be known regressions
> in hmac authenticated sessions. Note that issue is wider than "just"
> tpm_ibmvtpm.

This seems OK on my PowerVM box using tpm_ibmvtpm and TCG_TPM2_HMAC=y.
I do see one new message:

  [    2.475208] tpm2_start_auth_session: encryption is not active

But no error messages like on mainline.

Tested-by: Michael Ellerman <mpe at ellerman.id.au> (powerpc)

cheers