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

From: Andi Kleen
Date: Wed Aug 16 2006 - 12:33:42 EST

On Wed, 16 Aug 2006 12:31:49 -0400
Len Brown <len.brown@xxxxxxxxx> 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 PIC mode is an outdated way to drive the APICs that was used on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

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.


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