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From: Andi Kleen <ak@suse.de>
Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg)
To: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [rfc 08/45] cpu alloc: x86 support
Date: Tue, 20 Nov 2007 21:51:58 +0100
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Cc: Christoph Lameter <clameter@sgi.com>, akpm@linux-foundation.org,
       travis@sgi.com, Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>,
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> This limitation shouldn't apply to the percpu area, since gs_base can be 
> pointed anywhere in the address space -- in effect we're always indirect.

The initial reference copy of the percpu area has to be addressed by
the linker.

Hmm, in theory since it is not actually used by itself I suppose you could 
move it into positive space.

-Andi