[PATCH v5 0/5] Lazy flush for the auth session

[Jarkko Sakkinen]

On Sat Sep 21, 2024 at 3:08 PM EEST, Jarkko Sakkinen wrote:
> This patch set aims to fix:
> https://bugzilla.kernel.org/show_bug.cgi?id=219229.
>
> The baseline for the series is the v6.11 tag.
>
> v4:
> https://lore.kernel.org/linux-integrity/20240918203559.192605-1-jarkko@kernel.org/
> v3:
> https://lore.kernel.org/linux-integrity/20240917154444.702370-1-jarkko@kernel.org/
> v2:
> https://lore.kernel.org/linux-integrity/20240916110714.1396407-1-jarkko@kernel.org/
> v1:
> https://lore.kernel.org/linux-integrity/20240915180448.2030115-1-jarkko@kernel.org/
>
> Jarkko Sakkinen (5):
>   tpm: Return on tpm2_create_null_primary() failure
>   tpm: Implement tpm2_load_null() rollback
>   tpm: flush the null key only when /dev/tpm0 is accessed
>   tpm: Allocate chip->auth in tpm2_start_auth_session()
>   tpm: flush the auth session only when /dev/tpm0 is open
>
>  drivers/char/tpm/tpm-chip.c       |  14 ++++
>  drivers/char/tpm/tpm-dev-common.c |   8 +++
>  drivers/char/tpm/tpm-interface.c  |  10 ++-
>  drivers/char/tpm/tpm2-cmd.c       |   3 +
>  drivers/char/tpm/tpm2-sessions.c  | 109 ++++++++++++++++++------------
>  include/linux/tpm.h               |   2 +
>  6 files changed, 102 insertions(+), 44 deletions(-)


Roberto, James, speaking of digest cache. This patch set has no aim to
fix those issues but I do believe that it should improve also that 
feature.

If I don't get soon patch reviews for the patch set, I'll pick the 2nd
best option: disable bus encryption on all architectures including x86
and ARM64 (being by default on).

It's a force majeure situation. I know this would sort out the issue
but I really cannot send these as a pull request with zero reviewe-by's.

I expect this to be closed by tomorrow.

BR, Jarkko