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Date:      Wed, 26 Apr 1995 17:37:53 -0700 (PDT)
From:      Poul-Henning Kamp <phk@ref.tfs.com>
To:        bde@zeta.org.au (Bruce Evans)
Cc:        dufault@hda.com, current@freefall.cdrom.com
Subject:   Re: panic: pmap_zero_page: CMAP busy
Message-ID:  <199504270037.RAA13949@ref.tfs.com>
In-Reply-To: <199504260757.RAA10941@godzilla.zeta.org.au> from "Bruce Evans" at Apr 26, 95 05:57:58 pm

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> >The panic is caused by the difference between these two lines in
> >the config:
> 
> >>From GENERIC (works):
> >> config		kernel	root on wd0 swap on wd0 and wd1 and wd2 and vn0 dumps on wd0
> 
> >>From DESMOND (panics):
> >> config		kernel	root on wd0 swap on wd0 dumps on wd0
> 
> Maybe this has something to do with the bogus test for the end of
> swdevt[] in i386/autoconf.c.  The array is terminated by device NODEV
> but device 0 is tested for (the test for > 0 degenerates to == 0
> because dev_t is unsigned).  Apparently there are usually 0's sufficiently
> close to the end of swdevt[] for there to be no problems.

Be aware that the two termination entries are needed for diskless to work...

-- 
Poul-Henning Kamp <phk@login.dknet.dk> -- TRW Financial Systems, Inc.
'All relevant people are pertinent' && 'All rude people are impertinent'
=> 'no rude people are relevant'



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