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

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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.

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.

BR, Jarkko

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