Dear Kinky,
On 7/30/19 11:18 AM, Kinky Nekoboi wrote:
> loading the microcode via Linux Kernel works.
>
> including it via coreboot causes General Protection Faults.
>
> See included bootlog.
We hit the same issue on our board, and reported it to the Linux kernel
developers [1].
Unfortunately, we didn’t have more resources to pursue this further.
1. What is your configuration? How many processors, how much RAM?
2. So, loading it from GNU/Linux (initramfs) as Tom asked, seems to
work. I guess it’s the same with the vendor firmware?
3. As Tom tested it on a similar custom AMD board (with supposedly
microcode updates updated in the *vendor firmware*, and it worked
for him, there might be something wrong with how microcode updates
are applied in coreboot.
4. The user *sfs* in #[email protected] did not have the
problems if I remember correctly.
Anyway, somebody with time and motivation would need to debug this. But
it’d be great if you could check a few things and maybe chime in the
LKML discussion.
Kind regards,
Paul
[1]: https://lkml.org/lkml/2019/1/3/540
"General protection fault in `switch_mm_irqs_off()`"
smime.p7s
Description: S/MIME Cryptographic Signature
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