Subject: Re: The i386 pmap_zero_page_uncached() problem
To: Jared D. McNeill <jmcneill@invisible.yi.org>
From: Manuel Bouyer <bouyer@antioche.lip6.fr>
List: port-i386
Date: 07/03/2000 17:38:53
On Mon, Jul 03, 2000 at 12:34:54PM -0300, Jared D. McNeill wrote:
> What is it about pmap_zero_page_uncached() that's making it panic on Cyrix
> processors? I thought it was supposed to help boost performance, if so I'd
> hate to see that functionality lost on Cyrix processors.

Several users have reported problems with this, all on cyrix CPUs. I ran into
it myself.

> 
> I disabled the in-kernel debugger and haven't been bothered by the panics
> since. I don't know if it has to do with the debugger or if the problem is
> fixed.

And you had them before ?
I don't really understand what the debugger has to do with this, but it's an
interesting data point.

--
Manuel Bouyer, LIP6, Universite Paris VI.           Manuel.Bouyer@lip6.fr
--