Subject: Re: kernel crash upon reboot from MS-DOG
To: None <thomas@mathematik.uni-Bremen.de, vdlinden@fwi.uva.nl>
From: Paul Kranenburg <pk@cs.few.eur.nl>
List: current-users
Date: 12/03/1994 12:25:40
> > Since I installed a 1.0A kernel (and rebuilt the entire user land,
> > which built without problems) I get into the kernel debugger upon reboot
> > from MS-DOG (i.e.: ctrl-alt-del and then select NetBSD from my osbs20b8
> > boot menu).
>
If you have been using eg. virtual 386 mode, there is a chance that the
nested taks flag (PSL_NT) does not get reset after ctrl-alt-del. In this
case you'll see a "invalid TSS fault". Try this around line 194 in locore.s:
andl $~(PSL_AC|PSL_ID|PSL_NT),%eax