PAE removal patch for testing

[Mike Harding]

I'm building a debug kernel now... I'll advise if I see this again.

On Tue, 2003-08-26 at 04:58, Mike Tancsa wrote:
> What do your panic's look like ?  Do you have a crash dump with debug kernel ?
> 
>          ---Mike
> 
> At 10:30 PM 25/08/2003 -0700, Mike Harding wrote:
> 
> >I did just get a crash after doing the 'short' patch - I am reverting
> >to Aug. 7 code...
> >
> >- Mike H.
> >
> > > > Mike Tancsa wrote:
> > > > > At 04:51 PM 25/08/2003 -0500, Mike Silbersack wrote:
> > > > >
> > > > > >Right now, anyone who is experiencing problems should definitely 
> > try that
> > > > > >short patch which Mike Tancsa said works for him and confirm 
> > whether or
> > > > > >not it fixes the issue on their system.
> > > > >
> > > > > The 2 servers I am running it on both have been stable since 
> > applying it.
> > > > > ns4% uptime
> > > > >   9:58PM  up 2 days,  4:27, 2 users, load averages: 0.02, 0.03, 0.05
> > > > > ns4%
> > > > >
> > > > > would have rebooted several times by now.  The other machine is also
> > > > > stable.  Both are quite busy mail routers. One also runs 
> > spamassassin via a
> > > > > milter.
> > > >
> > > > This change matches -current and should probably be committed ASAP.
> > >
> > >    I've reviewed it as well and it definitely is a bug that needs to be 
> > fixed
> > > ASAP. Basically, the pmap_remove code in -stable doesn't handle the case of
> > > crossing a page table boundry properly. If the next page table page isn't
> > > currently mapped, then the kernel will [fatally] fault when trying to 
> > access
> > > it.
> >
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