Subject: Re: 1.6.1 lack of stability on cats
To: None <>
From: Chris Gilbert <>
List: port-arm
Date: 02/10/2003 10:23:29
On Mon, 10 Feb 2003 09:35:13 +0000
Richard Earnshaw <> wrote:

> > I've just built a 1.6.1_RC1 kernel with strongarm optimizations
> > enabled, but with bcopyinout.S pulled up to revision 1.6 and the
> > kernel seems fine (sufficient to completely bootstrap and regtest
> > gcc without any untoward problems).
> > 
> It appears I may have spoken too soon on this.  Building X last night
> lead to a number of core dumps which I wasn't seeing while
> bootstrapping gcc.  None of the core files seems to indicate that the
> application was at fault, and rerunning one of the failed compiles did
> not core a second time (only had time to try one).
> Looking at the pmap.c log file I see that several patches related to 
> cacheing page-table entries have been pulled up.  I'll try backing out
> some of those tonight unless someone can identify what is missing
> between the branch and current, which doesn't seem to have this
> instability.
> Jason, any ideas?

Is this a strongarm optimised kernel?  I find stability to increase with
a non SA optimised kernel, however I've still had the odd segv in
places.  I'm going to try stressing my cats without the SA optimisation
and the updated bcopyinout.S