Re: [PATCH for review] [54/145] x86_64: Remove obsolete PIC mode

Andi Kleen
2006-08-16T16:36:04Z

On Wed, 16 Aug 2006 12:31:49 -0400
Len Brown <len.brown@intel.com> wrote:

> On Thursday 10 August 2006 15:36, Andi Kleen wrote:
>
>
> > PIC mode is an outdated way to drive the APICs that was used on
> > some early MP boards. It is not supported in the ACPI model.
> >
> > It is unlikely to be ever configured by any x86-64 system
> >
> > Remove it thus.
>
> Is there any reason we can't entirely remove MPS from x86_64?
> (asside from the routines that ACPI uses)

There are still people who like to compile with CONFIG_ACPI=n or use
acpi=off

I wouldn't have a problem with disallowing CONFIG_ACPI=n, but acpi=off
still needs to work.

A lot of the newer systems don't have mptables anymore, but there are
still a lot around who do.

-Andi