From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <45E2E241.40104@domain.hid>
Date: Mon, 26 Feb 2007 14:36:01 +0100
From: Steven Scholz <steven.scholz@domain.hid>
MIME-Version: 1.0
Subject: Re: [Xenomai-core] latency hangs on AT91RM9200
References: <45DECFAF.60304@domain.hid> <45DF04F2.4020002@domain.hid>
	<45DF192C.6020505@domain.hid> <45E2B3A1.8070102@domain.hid>
	<45E2C2C3.1020202@domain.hid>
In-Reply-To: <45E2C2C3.1020202@domain.hid>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
List-Id: "Xenomai life and development \(bug reports, patches,
	discussions\)" <xenomai.xenomai.org>
List-Unsubscribe: <https://mail.gna.org/listinfo/xenomai-core>,
	<mailto:xenomai-core-request@domain.hid>
List-Archive: </public/xenomai-core>
List-Post: <mailto:xenomai@xenomai.org>
List-Help: <mailto:xenomai-core-request@domain.hid>
List-Subscribe: <https://mail.gna.org/listinfo/xenomai-core>,
	<mailto:xenomai-core-request@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: Xenomai-core@domain.hid

Hi Gilles,

>> Ok, found the bug (actually, Philippe did), as almost expected, the way
>> it is related to the latency program period is not really obvious. The
>> bug is that in the macro "irq_handler" in entry-armv.S, the return value
>> (in r0) of __ipipe_grab_irq is overriden by the subsequent call to
>> get_irqnr_and_base.
> 
> Here comes a patch. Note that it will only work correctly with
> CONFIG_PREEMPT disabled for now.

Right now we are testing it on two boards.
Looks good.

Thanks a million!

--
Steven