From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Date: Wed, 13 Aug 2014 07:02:02 +0000 (+0530)
Subject: powerpc/thp: Use ACCESS_ONCE when loading pmdp
X-Git-Tag: omap-for-v3.17/fixes-against-rc2~65^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e467245bf5226db34c4b12d3cbacfa2f7a15a8b;p=pandora-kernel.git

powerpc/thp: Use ACCESS_ONCE when loading pmdp

We would get wrong results in compiler recomputed old_pmd. Avoid
that by using ACCESS_ONCE

CC: <stable@vger.kernel.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---

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