tree f63fdb5db967253e46472ff776d1e22c38cee16e
parent 7bbd827750e630003896c96d0212962276ee5d91
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1113690273 -0700
committer Linus Torvalds <torvalds@ppc970.osdl.org> 1113690273 -0700

[PATCH] ppc64: Fix semantics of __ioremap

This patch fixes ppc64 __ioremap() so that it stops adding implicitely
_PAGE_GUARDED when the cache is not writeback, and instead, let the callers
provide the flag they want here.  This allows things like framebuffers to
explicitely request a non-cacheable and non-guarded mapping which is more
efficient for that type of memory without side effects.  The patch also
fixes all current callers to add _PAGE_GUARDED except btext, which is fine
without it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>