Re: [PATCH v3] x86/microcode/intel: Reject problematic loading on Granite Rapids systems

From: Borislav Petkov

Date: Fri Sep 18 2026 - 12:15:01 EST


On Fri, Sep 18, 2026 at 08:54:01AM +0200, Ingo Molnar wrote:
> It should at minimum say something like:
>
> Erratum GNR98: new revision %x is unsafe to apply until 0x1000405 is applied first, skipping it. Please upgrade firmware tools.

Even if you put prose in a warning message, it still doesn't explain the issue
fully. For stuff like that you need some properly written longer explanation
in the documentation.

Which I'm hoping we'll get eventually once the dust has settled down.

That's what the rest of this thread is trying to do but I haven't reviewed
yet.

> So this patch is still problematic IMO.

This patch is a minimal stable fix to stop it from #MCing. The real stuff
comes later. It all has been discussed on this very thread.

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette