From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Wolfgang Grandegger <wg@grandegger.com>
Cc: Wolfgang Grandegger <wg@denx.de>, xenomai@xenomai.org
Subject: Re: [Xenomai] imx28 rtcan flexcan system freezes
Date: Thu, 23 Jan 2014 13:23:41 +0100 [thread overview]
Message-ID: <52E109CD.7070405@xenomai.org> (raw)
In-Reply-To: <891daa591ae64f3c75be1bf430782be1@grandegger.com>
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.
next prev parent reply other threads:[~2014-01-23 12:23 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-22 10:24 [Xenomai] imx28 rtcan flexcan system freezes Alexandre COFFIGNAL
2014-01-22 11:23 ` Gilles Chanteperdrix
2014-01-22 11:36 ` Alexandre COFFIGNAL
2014-01-22 12:00 ` Gilles Chanteperdrix
2014-01-22 13:27 ` Alexandre COFFIGNAL
2014-01-22 13:30 ` Gilles Chanteperdrix
2014-01-22 14:04 ` Alexandre COFFIGNAL
2014-01-22 14:12 ` Gilles Chanteperdrix
2014-01-23 10:04 ` Gilles Chanteperdrix
2014-01-23 11:36 ` Wolfgang Grandegger
2014-01-23 12:05 ` Gilles Chanteperdrix
2014-01-23 12:21 ` Wolfgang Grandegger
2014-01-23 12:23 ` Gilles Chanteperdrix [this message]
2014-01-23 13:07 ` Gilles Chanteperdrix
2014-01-23 12:54 ` Alexandre COFFIGNAL
2014-01-23 13:10 ` Alexandre COFFIGNAL
2014-01-26 19:26 ` Wolfgang Grandegger
2014-01-26 19:29 ` Gilles Chanteperdrix
2014-01-26 20:16 ` Wolfgang Grandegger
2014-01-26 20:56 ` Gilles Chanteperdrix
2014-01-27 7:56 ` Wolfgang Grandegger
2014-01-28 22:06 ` Gilles Chanteperdrix
2014-01-29 7:16 ` Wolfgang Grandegger
2014-01-29 15:50 ` Alexandre COFFIGNAL
2014-01-29 17:58 ` Gilles Chanteperdrix
2014-01-31 13:15 ` Alexandre COFFIGNAL
2014-01-23 19:48 ` Gilles Chanteperdrix
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