From: Anton Blanchard <anton@samba.org>

Legacy iseries has problems with the bolted vmalloc patch.  This patch
disables the optimisation on iseries and creates a slb_add_bolted helper
function.

Also, while we require all SLB entries to be context switched, we werent
informing the iseries hypervisor.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>