[PATCH 1/6] tpm: implement TPM2 function to get update counter

[Tushar Sugandhi]

On 8/3/23 01:43, Jarkko Sakkinen wrote:
> On Thu Aug 3, 2023 at 12:04 AM EEST, Tushar Sugandhi wrote:
>> Btw, the function tpm2_pcr_read is not exposed directly to the other
>> subsystems (like IMA).  It is exposed via tpm_pcr_read.
>>
>> Do you want to expose tpm2_pcr_read directly,
>> or do you want me to update the function signature of tpm_pcr_read as well?
> As long as you mention that 'update_cnt' causes divegence in the
> in-kernel API, and therefore tpm[12]_pcr_read() cannnot be under the
> same orchestrator.
Yup. I will mention that in the description/comment.
>
> If you take this path, please implement a precursory patch, which
> replace the existing call sites with some sequence of tpm[12]_pcr_read()
> and tpm_is_tpm2() calls.
Sure.  I will add a precursory patch which will replace the existing
call sites.

Thanks for confirming the approach.

~Tushar
> BR, Jarkko