From: Dave Martin <dave.martin@linaro.org>
Date: Fri, 19 Aug 2011 17:00:08 +0000 (+0100)
Subject: ARM: 7031/1: entry: Fix Thumb-2 undef handling for multi-CPU kernels
X-Git-Tag: v3.2-rc1~189^2^2~26
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef4c53687e0adf5409896c4fa688b15f8d4dc0c0;p=pandora-kernel.git

ARM: 7031/1: entry: Fix Thumb-2 undef handling for multi-CPU kernels

When v6 and >=v7 boards are supported in the same kernel, the
__und_usr code currently makes a build-time assumption that Thumb-2
instructions occurring in userspace don't need to be supported.
Strictly speaking this is incorrect.

This patch fixes the above case by doing a run-time check on the
CPU architecture in these cases.  This only affects kernels which
support v6 and >=v7 CPUs together: plain v6 and plain v7 kernels
are unaffected.

Signed-off-by: Dave Martin <dave.martin@linaro.org>
Reviewed-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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