Use physical mode instead of logical mode to address more CPUs.  This is also
used in the CPU hotplug case to avoid a race.
Signed-off-by: NAndi Kleen <ak@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>