On Mon, 31 Jul 2023 10:14:05 +0000 "Jarkko Sakkinen" <jarkko@xxxxxxxxxx> wrote: > On Fri Jul 28, 2023 at 8:18 PM UTC, Daniil Stas wrote: > > On Fri, 28 Jul 2023 19:30:18 +0000 > > "Jarkko Sakkinen" <jarkko@xxxxxxxxxx> wrote: > > > > > On Thu Jul 27, 2023 at 3:38 PM UTC, Daniil Stas wrote: > [...] > > > > > > This is needs a bit more elaboration in order to be comprehended. > > > > > > Do you mean by "stutter" unexpected delays and when do they > > > happen? > > > > > > BR, Jarkko > > > > Yes, unexpected delays. They just happen randomly. > > You can google "AMD fTPM stuttering", there are a lot of examples. > > Here is one: https://www.youtube.com/watch?v=TYnRL-x6DVI > > What if you make tpm_amd_is_rng_defective() to unconditonally return > true? Does this make the problem dissappear, or not? > > BR, Jarkko I already tried compiling kernel without CONFIG_HW_RANDOM_TPM enabled, which does the same. Yes, it removes the issue.
