After applied your patches, the boot time is ~15 seconds. Less than 20 sec, but still much more than 7 sec when disabling HMAC. Send again in text mode. On Mon, Sep 16, 2024 at 10:25 AM Pengyu Ma <mapengyu@xxxxxxxxx> wrote: > > Hi Jarkko, > > After applied your patches, the boot time is ~15 seconds. > Less than 20 sec, but still much more than 7 sec when disabling HMAC. > > Thanks, > Aaron > > > On Mon, Sep 16, 2024 at 2:04 AM Jarkko Sakkinen <jarkko@xxxxxxxxxx> wrote: >> >> There is no load and flush the null key for every transaction. It only >> needs to be flushed when user space accesses TPM. This postpones the >> flush up to that point. >> >> The goal is to take the first step addressing [1]. Other performance >> improvements are needed too but this is the most obvious one and >> easiest to address. >> >> [1] https://bugzilla.kernel.org/show_bug.cgi?id=219229 >> >> Jarkko Sakkinen (4): >> tpm: remove file header documentation from tpm2-sessions.c >> tpm: address tpm2_create_null_primary() return value >> tpm: address tpm2_create_primary() failure >> tpm: flush the session null key only when required >> >> drivers/char/tpm/tpm-chip.c | 13 ++++ >> drivers/char/tpm/tpm-dev-common.c | 7 ++ >> drivers/char/tpm/tpm-interface.c | 9 ++- >> drivers/char/tpm/tpm2-cmd.c | 3 + >> drivers/char/tpm/tpm2-sessions.c | 115 ++++++++++-------------------- >> include/linux/tpm.h | 2 + >> 6 files changed, 68 insertions(+), 81 deletions(-) >> >> -- >> 2.46.0 >>
