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Date:      Thu, 24 Feb 2000 09:03:55 +0000 (GMT)
From:      Doug Rabson <dfr@nlsystems.com>
To:        Soren Schmidt <sos@freebsd.dk>
Cc:        Mike Smith <msmith@freebsd.org>, Yarema <yds@dppl.com>, FreeBSD Current <FreeBSD-Current@freebsd.org>, sos@freebsd.org
Subject:   Re: After last ATAPI update system doesn't boot if modules loaded by /boot/loader.
Message-ID:  <Pine.BSF.4.10.10002240902120.54384-100000@tecra.nlsystems.com>
In-Reply-To: <200002240845.JAA86244@freebsd.dk>

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On Thu, 24 Feb 2000, Soren Schmidt wrote:

> It seems Mike Smith wrote:
> > > Forgive me if I'm beating a dead horse... I'm still having the following
> > > problem if I load any modules from /boot/loader.conf:
> > 
> > I've reproduced this here, and narrowed it down to Soren's ATA megacommit 
> > on the 18th.  Unfortunately, the newbus patches (tested) and the other 
> > gunk (untested) ended up lumped in together, and I'm not having a lot of 
> > luck working out what exactly might be causing this.
> 
> That megapatch was only newbus patches and cosmetics around that, one
> new item was cmd646 support but that is hardly the problem here.
> 
> > Soren - this is somewhat of a showstopper.  Can you reproduce it there?
> 
> Nope, I've tried several machines here, no problems, even with tons
> of modules..
> 
> The only thing I can come up with is that _something_ makes the
> delayed probe be called _before_ interrupts are up and running.
> That will make it fail like this. Quuestion is is something
> else messing with those hooks ?
> We've seen this before, but back then no solution was found either,
> it dissaperead all by itself...

Nick Hibma's machine at work shows this problem. Its an AMD Athlon FWIW.
Nick spent a couple of hours looking at it without much success. I'll try
some things today to see if the probe is being called with interrupts
disabled.

--
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 181 442 9037




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