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Date:      Wed, 17 Mar 1999 21:19:33 +0200 (SAT)
From:      Robert Nordier <rnordier@nordier.com>
To:        chuckr@mat.net (Chuck Robey)
Cc:        crossd@cs.rpi.edu, rnordier@nordier.com, dillon@apollo.backplane.com, freebsd-hackers@FreeBSD.ORG
Subject:   Re: KVA size changes in 3.1-stable
Message-ID:  <199903171919.VAA00398@ceia.nordier.com>
In-Reply-To: <Pine.BSF.4.10.9903162300270.348-100000@picnic.mat.net> from Chuck Robey at "Mar 16, 99 11:01:39 pm"

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Chuck Robey wrote:

> On Tue, 16 Mar 1999, David E. Cross wrote:
> 
> > AUGH!
> > 
> > I compiled the /boot/loader from the 4.0 tree CVS-ed a couple of hours ago
> > (we have our own copy which periodically syncs with cvsup.freebsd.org).  I
> > tell it to boot *any* kernel, and it just *hangs* (caps lock/scroll lock 
> > still works, but nothing else.)... Normally a /boot/loader startup looks 
> > something like:
> > /-\|kernel /-\|/... etc you get the idea.
> > 
> > this one looks like:
> > 
> > /-\|/ (and hangs here)
> 
> How long since you last used disklabel to update your bootblocks?  Old
> ones will do that (they did for me, using 2.2.6 bootblocks a while
> back).

I'm really skeptical that the loader problems you experienced had
anything directly to do with the 2.2.6 bootblocks.  I have a machine
here, still running 2.2.5-RELEASE, and regularly test loader on
it.  To double-check, I just upgraded the bootblocks to 2.2.6, and
loader works fine.

Because loader runs under BTX, the protected mode environment passed
by the bootblocks is completely torn down, and the machine is
brought back to real address mode before BTX starts.  So I just
can't relate to this kind of cause producing this kind of effect.

To answer David's original question, I don't know of anything likely
to cause loader to behave this way.  I think Daniel's suggestion,
made elsewhere, of trying /boot/loader.old would help in establishing
whether the problem is in the new code, or whether something in
the environment has changed and is causing problems.  However,
I'll try the latest loader, once today's make world finishes here.

--
Robert Nordier


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