Re: Problem with late AMD microcode reload/feedback

[RafaÅ MiÅecki]

On Sun, 16 Dec 2018 at 11:06, Borislav Petkov <bp@xxxxxxxxx> wrote:
> > For my hack tests I'd like to replace my 0x0810100b with a 0x08101007.
>
> Why would you even want to downgrade the microcode?!

Debugging CPU errors. I have two notebooks:

1) HP EliteBook 745 G5 with Ryzen 5 PRO 2500U
It runs 1.03.01 BIOS with 0x0810100b microcode and suffers from MCE
logged CPU errors.

2) MateBook D with Ryzen 5 2500U
It runs 1.12 BIOS with 0x08101007 microcode and MCE doesn't report any
CPU errors.

I wanted to downgrade microcode on HP EliteBook and upgrade microcode
on MateBook to see if that makes a difference for them. For that I
need to:
1) Dump old microcode from MateBook & run it on EliteBook
2) Dump new microcode from EliteBook & run it on MateBook

-- 
RafaÅ