Sorry for the missing history.

I started with a vanilla 2.6.14-7 kernel from kernel.org, I patched it
with a Motorola patch to enable the features specific to the mvme5500.
I built under ELDK 4.0 and the kernel ran just fine.

Next I retrieved xenomai-2.1.1 and followed the install instructions.
The adeos version adeos-ipipe-2.6.14-1.2.03.patch.  This patch applied
and I rebuilt the kernel.  I ran into a problem with xmon not compiling
so I removed that switch from the kernel hacking menu and it built fine.

That brings us to now.

In reference to your recommendation, can I simply disable ipipe and
leave xenomai enabled and expect the kernel to run?  I thought there was
a pretty close coupling between the two.

Thanks for the help.

Jim

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] 
Sent: May 19, 2006 1:05 PM
To: Rosenow, Jim
Cc: [email protected]
Subject: Re: [Xenomai-help] Almost running - kernel BUG in
add_preempt_count at kernel/sched.c:2819!

Rosenow, Jim wrote:
> Hi,
> 
> I've almost got my mvme5500 running.  I get the following error when
booting up.
> 
> kernel BUG in add_preempt_count at kernel/sched.c:2819!
> 
> Oops: kernel access of bad area, sig: 11 [#1]
> 
> I'm a little new at this and don't know whether I'm looking at a
xenomai problem, an adeos problem, or something else.
> 
> Any help and direction would be appreciated.
> 

If unsure where the problem comes from, try to boot a clean kernel
(unpatched) first, then a patched one but with disabled ipipe, and then
one with disabled xenomai. If the bug seems to be ipipe/xeno-related,
please report the patch and the xenomai versions, and also any potential
board-specific patches.

Jan


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