Re: [gentoo-user] AMD microcode updates - where are they?!

[Jack]

On 2019.07.12 08:18, Mick wrote:
> I'm looking at dmesg output which on my Intel CPUS of various
> vintages shows
> "microcode updated early ..." but two different AMD APUs of mine do
> not show
> the same, despite AMD apparently releasing microcode updates going
> back to
> 2011:
>
> https://www.bleepingcomputer.com/news/hardware/amd-releases-spectre-v2-microcode-updates-for-cpus-going-back-to-2011/

I have not yet done any further searching or digging, but that link  
seems to only talk specifically about Windows updates, not generic  
firmware updates.

I have three different AMD based PCs, and so far, I don't see anything  
different from Mick.  However, on two Artix linux systems, I'm still  
not quite sure whether the microcode is in the initramfs or not.  I  
hate to admit I'm also not sure on my Gentoo box, having so far made  
only minor changes to the kernel from the June stage 3 tarball, and  
used genkernel to compile both kernel and initramfs.  I'm working on  
configuring 5.2.0, but it will take me a while to get through the  
complete configuration (starting from scratch.)

One suggestion - don't just grep for microcode, also check for  
"firmware" for which I use 'dmesg | egrep -i "firmware|microcode"'.

And, one question - if I have linux-firmware emerged with savedconfig  
use flag set, what's the best/easiest way to hunt through the actually  
available firmware, to check if I might have missed something  
relevant.  So far, I've just searched the git repository for the  
package.  I suppose I could have kept a copy of the manifest from the  
initial emerge (without savedconfig)  but I didn't think of it at the  
time.

Jack