From d410ae2126481a74bc5be4a6242c4a232c19a984 Mon Sep 17 00:00:00 2001
From: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Date: Tue, 11 Mar 2014 10:56:18 +0530
Subject: [PATCH] powerpc/book3s: Fix CFAR clobbering issue in machine check
 handler.

While checking powersaving mode in machine check handler at 0x200, we
clobber CFAR register. Fix it by saving and restoring it during beq/bgt.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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