From 24a1bdc358bf3c533f7d575202e92aaca0f91761 Mon Sep 17 00:00:00 2001
From: Anton Blanchard <anton@samba.org>
Date: Fri, 4 Apr 2014 16:54:04 +1100
Subject: [PATCH] powerpc/ftrace: Fix ABIv2 issues with __ftrace_make_call

__ftrace_make_call assumed ABIv1 TOC stack offsets, so it
broke on ABIv2.

While we are here, we can simplify the instruction modification
code. Since we always update one instruction there is no need to
probe_kernel_write and flush_icache_range, just use patch_branch.

Signed-off-by: Anton Blanchard <anton@samba.org>
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