MMU problems?

Lucinda Schafer lucsch at
Thu Jun 22 23:44:29 EST 2000

I agree. I believe we ARE dealing with a kernel bug, and it is particular to
the MPC823.

Let's hear some success stories--embedded units in production, running in
the field for days, shutting down power and rebooting with no kernel panics.
That may help convince me we are dealing with a hardware issue.

Lucinda Schafer
Staff Software Engineer
Adaptive Micro-Ware, Inc.

-----Original Message-----
From: Patrick Lerda [mailto:Lerda at]
Sent: Thursday, June 22, 2000 2:01 AM
To: 'Dan Malek'; Nguyen Xuan Hoang
Cc: linuxppc-embedded at
Subject: RE: MMU problems?

Have you tried to do complex operation on a 8xx board like compiling the
kernel. This operation
works well on a PPC740 board, but on a 8xx after a long time the kernel goes
in an unstable
state. Theses bugs are related to the 8xx MMU code.

Patrick LERDA

> -----Message d'origine-----
> De:	Dan Malek [SMTP:dan at]
> Date:	jeudi 22 juin 2000 05:56
> À:	Nguyen Xuan Hoang
> Cc:	linuxppc-embedded at
> Objet:	Re: MMU problems?
> Nguyen Xuan Hoang wrote:
> > I have seen a lot of discussions about MMU on MPC823,
> There are no MMU or cache related problems on any of the MPC8xx
> processors and stable versions of Linux.  These are just people
> discussing the challenges of building custom boards and making
> source code changes.
> There are dozens of people shipping products with Linux running on
> these processors.  You seldom hear from people that are happy and
> successful.
> 	-- Dan

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