From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Cyril Wallois <walloiscyril@domain.hid>
Cc: xenomai@xenomai.org
Subject: Re: [Xenomai-help] [RTnet-users] Alignment problem
Date: Thu, 15 Jul 2010 14:11:55 +0200 [thread overview]
Message-ID: <4C3EFB0B.7050801@domain.hid> (raw)
In-Reply-To: <AANLkTinwyQgI26INSzLlvgyP2hlAmuziK7V3iNCVa8Nd@domain.hid>
Cyril Wallois wrote:
> Hi everybody,
>
> I have try to solve my problem by using a newer kernel (2.6.30) without
> success, I have always the same issue with rtnet when I try rtping :
>
> #./rtping 127.0.0.1
> Xenomai: suspending kernel thread bf009310 ('rtnet-rtpc') at 0xc002d3c8
> after exception #0
Why simply not disassembling the kernel and looking at what is at
0xc002d3c8 and looking at the values of the registers? It is entirely
possible that the RTnet IP stack requires unaligned accesses (the
vanilla kernel does it, notably for handling of IP options), and as you
may know it, unaligned accesses may require software emulation on some
platforms. However, I am not sure you would get an exception #0 in that
case. Your post does not even tell us on what platform you get this
issue, though I suspect this is ARM.
--
Gilles.
next prev parent reply other threads:[~2010-07-15 12:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-15 9:24 [Xenomai-help] [RTnet-users] Alignment problem Cyril Wallois
2010-07-15 12:11 ` Gilles Chanteperdrix [this message]
2010-07-15 14:10 ` Cyril Wallois
2010-07-15 14:20 ` Gilles Chanteperdrix
[not found] ` <AANLkTinJaCoe5nfcUuC25_0eOLJid1hk582uFdzRZT1_@domain.hid>
2010-07-15 17:36 ` Gilles Chanteperdrix
2010-07-16 6:51 ` Gilles Chanteperdrix
2010-07-16 9:51 ` Cyril Wallois
-- strict thread matches above, loose matches on Subject: below --
2010-06-08 8:16 [Xenomai-help] " Cyril Wallois
2010-06-08 8:57 ` [Xenomai-help] [RTnet-users] " Gilles Chanteperdrix
2010-06-08 16:04 ` Cyril Wallois
2010-06-08 17:18 ` Gilles Chanteperdrix
2010-06-09 8:13 ` Cyril Wallois
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