tree 36aa8357700f25acac080003fbed376f737ca1b4
parent 06c887666803608c3efe3807eba0e362307db7c4
author Michael Ellerman <michael@ellerman.id.au> 1347031904 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1347233727 +1000

powerpc: Initialise paca.data_offset with poison

It's possible for the cpu_possible_mask to change between the time we
initialise the pacas and the time we setup per_cpu areas.

Obviously impossible cpus shouldn't ever be running, but stranger things
have happened. So be paranoid and initialise data_offset with a poison
value in case we don't set it up later.

Based on a patch from Anton Blanchard.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>