From mboxrd@z Thu Jan  1 00:00:00 1970
From: Arnd Bergmann <arnd@arndb.de>
Subject: Re: [RFC PATCH v1 00/40] Meta Linux Kernel Port
Date: Tue, 13 Nov 2012 09:55:52 +0000
Message-ID: <201211130955.52429.arnd@arndb.de>
References: <1351700061-7203-1-git-send-email-james.hogan@imgtec.com> <201211121910.09395.arnd@arndb.de> <50A2165F.4010202@imgtec.com>
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To: James Hogan <james.hogan@imgtec.com>
Cc: linux-arch <linux-arch@vger.kernel.org>

On Tuesday 13 November 2012, James Hogan wrote:
> Hmm, I found the thread "ARM unaligned MMIO access with
> attribute((packed))" which appears to be one of the problems you're
> referring to. With some experimentation I can't reproduce this kind of
> problem with our current compiler, but it's certainly cause for concern.

Right. The main problem for reproducing this is that it depends on
undefined behavior in C (casting between pointers to types of different
alignment), and what gcc does in this case has changed a couple of times.

	Arnd