Tested, at least basically, on Power4 iSeries with shared processors, on
Power4 pSeries and RS64 (non-SLB) iSeries machines.

On pSeries SLB machines we "bolt" an SLB entry for the first segment of the
vmalloc() area into the SLB, to reduce the SLB miss rate.  This caused
problems, so was disabled, on iSeries because the bolted entry was not
restored properly on shared processor switch.  This patch adds information
about the bolted vmalloc segment to the lpar map, which should be restored
on shared processor switch.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>