From: Suresh Siddha <suresh.b.siddha@intel.com>
Date: Thu, 29 Oct 2009 02:46:57 +0000 (-0800)
Subject: x86_64, ftrace: Make ftrace use kernel identity mapping to modify code
X-Git-Tag: v2.6.33-rc1~374^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=55ca3cc1746335bb6ef1d3894ddb6d0c729b3518;p=pandora-kernel.git

x86_64, ftrace: Make ftrace use kernel identity mapping to modify code

On x86_64, kernel text mappings are mapped read-only with
CONFIG_DEBUG_RODATA. So use the kernel identity mapping instead
of the kernel text mapping to modify the kernel text.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Tested-by: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20091029024821.080941108@sbs-t61.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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