tree 8ea17c81f09dec7c6e8bfdc8f3288ec7cfa439c6
parent 8b64a9dfb091f1eca8b7e58da82f1e7d1d5fe0ad
author Mihai Caraman <mihai.caraman@freescale.com> 1346899784 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1346975329 +1000

powerpc: Restore VDSO information on critical exception om BookE

Critical exception on 64-bit booke uses user-visible SPRG3 as scratch.
Restore VDSO information in SPRG3 on exception prolog.

Use a common sprg3 field in PACA for all powerpc64 architectures.

Signed-off-by: Mihai Caraman <mihai.caraman@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>