tree c7a37d40dc33189236b343cd1831bdeaf8e6fa59
parent 92f53a85db3730ae088aaeb7900f85909fd1eda6
author Paul Mundt <lethal@linux-sh.org> 1343103354 +0900
committer Paul Mundt <lethal@linux-sh.org> 1343189473 +0900

sh: Fix up recursive fault in oops with unset TTB.

Presently the oops code looks for the pgd either from the mm context or
the cached TTB value. There are presently cases where the TTB can be
unset or otherwise cleared by hardware, which we weren't handling,
resulting in recursive faults on the NULL pgd. In these cases we can
simply reload from swapper_pg_dir and continue on as normal.

Cc: stable@vger.kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>