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Date: Thu, 23 Jan 2014 13:23:41 +0100
From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
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Subject: Re: [Xenomai] imx28 rtcan flexcan system freezes
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To: Wolfgang Grandegger <wg@grandegger.com>
Cc: Wolfgang Grandegger <wg@denx.de>, xenomai@xenomai.org

On 01/23/2014 01:21 PM, Wolfgang Grandegger wrote:
>> Vanilla handles the alignment trap by emulating the faulting
>
>> instruction. Last time I checked, there were some problems related to
>
>> running the emulation over xenomai domain, though looking at the code
>
>> now, I see nothing which would prevent us from doing it.
>
>
>
> Yes, I know. But the handling of unaligned accesses via trap handler must
>
> be
>
> enabled by the user and I'm not aware that this is needed for vanilla
>
> Linux.

I remember reading on the LAKML that the alignment trap is needed for 
kernel operations, notably for the IP stack.

-- 
					    Gilles.