From: Kees Cook <keescook@chromium.org>
Date: Thu, 3 Apr 2014 20:29:50 +0000 (-0700)
Subject: ARM: mm: allow text and rodata sections to be read-only
X-Git-Tag: omap-for-v3.20/drop-legacy-3517~102^2^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=80d6b0c2eed2a504f6740cd1f5ea76dc50abfc4d;p=pandora-kernel.git

ARM: mm: allow text and rodata sections to be read-only

This introduces CONFIG_DEBUG_RODATA, making kernel text and rodata
read-only. Additionally, this splits rodata from text so that rodata can
also be NX, which may lead to wasted memory when aligning to SECTION_SIZE.
The read-only areas are made writable during ftrace updates and kexec.

Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Laura Abbott <lauraa@codeaurora.org>
Acked-by: Nicolas Pitre <nico@linaro.org>
---

Reading git-diff-tree failed