From: Matt Tolentino

Some cleanup work in early page table init preparing for memory hotplug.

Hacked up by AK
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>