Re: [PATCH v6 10/90] x86/cpu: Rescan CPUID table after disabling PSN

From: Borislav Petkov

Date: Wed May 13 2026 - 13:39:24 EST


On Wed, May 13, 2026 at 07:25:23PM +0200, Ahmed S. Darwish wrote:
> If we can track the clear_cpu_cap() bits above, then AFAIK a reliable
> solution would be to just re-initialize the whole CPUID table whole sale
> and then invoke apply_forced_caps().

Maybe... later...

Right now the *only* thing we wanna do *first* is the conversion. Which is
a huuge undertaking in itself.

So please no more unrelated changes and "it would be good to do this and
that." That can be done later.

If we find a bug while doing so then it is very likely an existing bug which
we'll fix immeditely and continue with the conversion.

Once everything has been converted and the dust settles, *then* w can do
improvements ontop.

Thx.

--
Regards/Gruss,
Boris.

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