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

[Tushar Sugandhi]

On 8/2/23 18:22, Mimi Zohar wrote:
> On Wed, 2023-08-02 at 06:58 +0300, Jarkko Sakkinen wrote:
>>  From long description I see zero motivation to ack this change, except
>> some heresay about IMA requiring it. Why does IMA need update_cnt and
>> why this is not documented to the long description?
> The motivation is to detect whether the IMA measurement list has been
> truncated, for whatever reason.  A new IMA record should be defined
> containing the "pcrCounter" value.  (I have not had a chance to review
> this patch set.)
>
> This new record would be a pre-req for both Tushar's "ima: measure
> events between kexec load and execute" patch set and Sush's proposal to
> trim the measurement list.  (I haven't looked at it yet either.)
>
  Thanks Mimi. Take your time.