From: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
To: Aurele Traynard <aurele.traynard@domain.hid>
Cc: Xenomai help <xenomai@xenomai.org>
Subject: Re: [Xenomai-help] first module help
Date: Fri, 22 Apr 2011 15:15:15 +0200 [thread overview]
Message-ID: <4DB17F63.2050504@domain.hid> (raw)
In-Reply-To: <BANLkTikNWeDdRMXFN=gHK=sQshMgP-=y5w@domain.hid>
Aurele Traynard wrote:
> ok i'm sorry i wasn't clear at all...
> my problem is : when i call readl in a rt_task, the task is stopped...
> (maybe because the rt_task is launched in a module?)
> "Xenomai: suspending kernel thread bf0041c8 ('test_rt') at 0xbf003824 after
> exception #0"
> if i remove the readl there is no problem
>
> With a normal Linux, in a module there isn't any problem
On what platform? I can think of two things:
- the platform you use maps the ioremaped memory on-demand (x86 and ARM
at least do not allow this, but I do not know about other platforms)
- you are making an unaligned access, it works with Linux because it has
a handler for handling unaligned accesses, whereas Xenomai default
handler is to simply suspend a task doing this kind of things.
Please do not forget to CC the mailing list.
--
Gilles.
next prev parent reply other threads:[~2011-04-22 13:15 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-22 6:52 [Xenomai-help] first module help Aurele Traynard
2011-04-22 7:19 ` Gilles Chanteperdrix
2011-04-22 9:01 ` Gilles Chanteperdrix
2011-04-22 12:49 ` Aurele Traynard
[not found] ` <BANLkTikNWeDdRMXFN=gHK=sQshMgP-=y5w@domain.hid>
2011-04-22 13:15 ` Gilles Chanteperdrix [this message]
2011-04-22 13:42 ` Aurele Traynard
2011-04-22 14:20 ` Gilles Chanteperdrix
2011-04-22 15:11 ` Aurele Traynard
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