Re: [PATCH] [RFC] x86/cpu: rework instruction set selection

[Arnd Bergmann]

On Fri, Apr 25, 2025, at 17:34, H. Peter Anvin wrote:
> On April 25, 2025 7:15:15 AM PDT, Arnd Bergmann <arnd@xxxxxxxxxx> wrote:
>
> I really don't like testing an unrelated feature (CMOV for PAE); 

How about a new symbol with the opposite polarity, e.g. CONFIG_CPU_586?
In that case, X86_HAVE_PAE and X86_CMOV could both depend on that
not being set.

I only picked the X86_CMOV symbol because it already exists in .config
files, but that is not the important bit here.

> furthermore, at least some old hypervisors were known to have
> broken PAE.

I'm not following. What does that have to do with my patch?

     Arnd