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From: "John S. Dyson" <toor@dyson.iquest.net>
Message-Id: <199612110522.AAA00192@dyson.iquest.net>
Subject: Re: More info about fatal trap 12
To: Tor.Egge@idt.ntnu.no (Tor Egge)
Date: Wed, 11 Dec 1996 00:22:24 -0500 (EST)
Cc: peter@spinner.dialix.com, smp@bluenose.na.tuns.ca, smp@FreeBSD.org
In-Reply-To: <199612110349.EAA00310@pat.idt.unit.no> from "Tor Egge" at Dec 11, 96 04:49:01 am
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> 
> This indicates that cr3 was correct, PTDpde was correct, but 
> pmap->pm_pdir[PTDPTDI] evaluated to 0. This triggered the use of the
> alternate page table memory area.
> 
> Later on, during the post mortem investigation, pmap->pm_pdir[PTDPTDI]
> evaluates to the correct value. 
> 
I am not watching things extremely closely on this front, but it smells
like a missing pmap_update (or a defective one.)  -- just a shot in the
dark...  Still lusting after my 2nd CPU :-).

John