From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <4B96570F.5030304@domain.hid>
Date: Tue, 09 Mar 2010 09:11:27 -0500
From: "Steven A. Falco" <sfalco@domain.hid>
MIME-Version: 1.0
References: <4B95532E.1060409@domain.hid> <4B955D71.5050306@domain.hid>
	<4B955EE4.9030204@domain.hid>
In-Reply-To: <4B955EE4.9030204@domain.hid>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: Re: [Xenomai-help] BUG: Bad page map
List-Id: Help regarding installation and common use of Xenomai
	<xenomai.xenomai.org>
List-Unsubscribe: <https://mail.gna.org/listinfo/xenomai-help>,
	<mailto:xenomai-help-request@domain.hid>
List-Archive: </public/xenomai-help>
List-Post: <mailto:xenomai@xenomai.org>
List-Help: <mailto:xenomai-help-request@domain.hid>
List-Subscribe: <https://mail.gna.org/listinfo/xenomai-help>,
	<mailto:xenomai-help-request@domain.hid>
To: Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
Cc: xenomai-help <xenomai@xenomai.org>

Gilles Chanteperdrix wrote:
> Steven A. Falco wrote:
>> Steven A. Falco wrote:
>>> I'm beginning to write an RTDM driver for a custom PCI
>>> device.  The plan is to map the device registers into
>>> user space, and deal with all the details in a Xenomai
>>> process.  However, I ran into crashes trying to access
>>> the device's memory from user space (via mmap in the RTDM
>>> driver).
>> Turns out to behave the same without IPIPE/Xenomai.  I'll
>> repost on the ppc dev list.
> 
> ISTR it is a known issue, and has been fixed. If that is the case,
> latest I-pipes (such as 2.6.30.3-powerpc-DENX-2.7-06), should contain a
> fix. Please give it a try.
> 

Excellent memory!  I did find a couple of fixes for this:

http://patchwork.ozlabs.org/patch/34047/
http://patchwork.ozlabs.org/patch/34113/

	Thanks,
	Steve