From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Thu, 4 Jul 2013 10:00:23 +0000 (+0100)
Subject: ARM: poison the vectors page
X-Git-Tag: v3.11-rc4~12^2^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f928d4f2a86f46b030fa0850385b4391fc2b5918;p=pandora-kernel.git

ARM: poison the vectors page

Fill the empty regions of the vectors page with an exception generating
instruction.  This ensures that any inappropriate branch to the vector
page is appropriately trapped, rather than just encountering some code
to execute.  (The vectors page was filled with zero before, which
corresponds with the "andeq r0, r0, r0" instruction - a no-op.)

Cc: <stable@vger.kernel.org>
Acked-by Nicolas Pitre <nico@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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