Re: [coreboot] When does AMD release the fam15 spectre microcode updates?

[Rudolf Marek]

Hi,

Dne 29.3.2018 v 20:39 [e-mail] napsal(a):
> > Plus make sure you enable "LFENCE is dispatch serializing" - perhaps coreboot can do that :) it is simple
> > MSR write on fam 10h 12h+ the fam 11h and 0fh dont have this MSR but LFENCE is dispatch serilizing.
>
> Hmm do you have more info links about this?

Yes sure, goto [1] click on [2] and check "MITIGATION G-2". Basically just set:
MSR C001_1029[1]=1 on 10h/12h/14h/15h/16h/17h the 0fh and 11h don't have it but there is LFENCE dispatch serializing already.

Thanks
Rudolf

[1] https://www.amd.com/en/corporate/security-updates
[2] https://developer.amd.com/wp-content/resources/Managing-Speculation-on-AMD-P...