tree ca1c813648ea075b772112237fde3ccfe3ddb776
parent c054065bc10a7ee2bcf78b5bc95f4b4d9bdc923a
author Kumar Gala <galak@kernel.crashing.org> 1209545395 -0500
committer Kumar Gala <galak@kernel.crashing.org> 1212436482 -0500

[POWERPC] Move to runtime allocated exception stacks

For the additonal exception levels (critical, debug, machine check) on
40x/book-e we were using "static" allocations of the stack in the
associated head.S.

Move to a runtime allocation to make the code a bit easier to read as
we mimic how we handle IRQ stacks.  Its also a bit easier to setup the
stack with a "dummy" thread_info in C code.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Paul Mackerras <paulus@samba.org>