From 80aa0fb4940bf8ee52bcb574d74459a7aea45621 Mon Sep 17 00:00:00 2001
From: James Yang <James.Yang@freescale.com>
Date: Tue, 25 Jun 2013 11:41:05 -0500
Subject: [PATCH] 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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