Re: [PATCH] x86/acpi/boot: Correct acpi_is_processor_usable() check again

[Mario Limonciello]

On 11/13/25 8:34 AM, Borislav Petkov wrote:
> On Thu, Nov 13, 2025 at 08:30:27AM -0600, Mario Limonciello wrote:
> > > +	/*
> > > +	 * QEMU expects legacy "Enabled=0" LAPIC entries to be counted as usable
> > > +	 * in order to support CPU hotplug in guests.
> > > +	 */
> >
> > I think it would be good to amend this comment to indicate that the behavior
> > of the "enabled bit" changed and that QEMU follows the newer behavior but
> > advertises the older version.
>
> This is just there to hint why we're doing this fix to the kernel - i.e.,
> try to salvage an already shit situation. Any other deviation from the spec is
> not the kernel's problem.

OK.