From: James Yang <James.Yang@freescale.com>
Date: Tue, 25 Jun 2013 16:41:05 +0000 (-0500)
Subject: powerpc: Fix string instr. emulation for 32-bit processes on ppc64
X-Git-Tag: v3.11-rc1~94^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80aa0fb4940bf8ee52bcb574d74459a7aea45621;p=pandora-kernel.git

powerpc: Fix string instr. emulation for 32-bit processes on ppc64

String instruction emulation would erroneously result in a segfault if
the upper bits of the EA are set and is so high that it fails access
check.  Truncate the EA to 32 bits if the process is 32-bit.

Signed-off-by: James Yang <James.Yang@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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