From: Kumar Gala <galak@kernel.crashing.org>
Date: Tue, 10 Feb 2009 10:57:46 +0000 (+0000)
Subject: powerpc/mm: Fix _PAGE_COHERENT support on classic ppc32 HW
X-Git-Tag: v2.6.29-rc5~37^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f99fb8a2cbf0fd9ce9b2d5d298943d0d4dc479f7;p=pandora-kernel.git

powerpc/mm: Fix _PAGE_COHERENT support on classic ppc32 HW

The following commit:

commit 64b3d0e8122b422e879b23d42f9e0e8efbbf9744
Author: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date:   Thu Dec 18 19:13:51 2008 +0000

    powerpc/mm: Rework usage of _PAGE_COHERENT/NO_CACHE/GUARDED

broke setting of the _PAGE_COHERENT bit in the PPC HW PTE.  Since we now
actually set _PAGE_COHERENT in the Linux PTE we shouldn't be clearing it
out before we propogate it to the PPC HW PTE.

Reported-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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