tree 29fe4235a9aa51e045cc3d4056a0ecc71de48383
parent 4a280a413c0c0da03936483384c9e5142966635e
author Joakim Tjernlund <joakim.tjernlund@transmode.se> 1258676468 +0000
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1260339037 +1100

powerpc/8xx: Restore _PAGE_WRITETHRU

8xx has not had WRITETHRU due to lack of bits in the pte.
After the recent rewrite of the 8xx TLB code, there are
two bits left. Use one of them to WRITETHRU.

Perhaps use the last SW bit to PAGE_SPECIAL or PAGE_FILE?

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>