Re: [PATCH RFC] tpm: disable hwrng for known-defective AMD RNGs

[Linux regression tracking (Thorsten Leemhuis)]

On 09.02.23 16:41, Limonciello, Mario wrote:
> On 2/9/2023 09:31, Jason A. Donenfeld wrote:
>> Do not register a hwrng for certain AMD TPMs that are running an old
>> known-buggy revision. Do this by probing the TPM2_PT_MANUFACTURER,
>> TPM2_PT_FIRMWARE_VERSION_1, and TPM2_PT_FIRMWARE_VERSION_2 properties,
>> and failing when an "AMD"-manufactured TPM2 chip is below a threshold.
>>
>> BROKEN BROKEN BROKEN - I just made the version numbers up and haven't
>> tested this because I don't actually have hardware for it. I'm posting
>> this so that Mario can take over its development and submit a v2 himself
>> once he has confirmed the versioning info from inside AMD.
> 
> Thanks, happy to do that. 

Just a quick note from my side: many many thx to both of you for taking
care of this!

Ciao, Thorsten