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Date:      Sun, 16 Jul 2000 12:12:02 -0500
From:      Stephen Montgomery-Smith <stephen@math.missouri.edu>
To:        Maxime Henrion <mhenrion@cybercable.fr>
Cc:        freebsd-stable@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject:   Re: config and config -r
Message-ID:  <3971ECE2.6639D65A@math.missouri.edu>
References:  <3970AB23.F76B05CB@cybercable.fr>

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I had a similar problem once when I changed the processor on
my motherboard from a 486 to a 586.  I recompiled the kernel
but I also got those page faults.  I asked on these newsgroups
and people suggested the processor was broken.  Then I tried
config -r (well I didn't know the -r option so I did the
equivalent - deleting the compile/XXX directory) and then it
worked great.

I think that config -r has to be done very occasionally.  I
guess when it has to be done, it is obvious.

Maxime Henrion wrote:
> 
>     Hello,
> 
> ..........
>
>     As I didn't want to recompile the whole stuff, I used a config and
> not a config -r to build a new kernel, after having changed its
> configuration. I removed several devices and I thought that won't cause
> any problem, as the objects files for these devices won't be linked into
> the kernel.
>     But after rebooting on this new kernel, I had a page fault before
> any kernel message :/ Is there anything to check in order to know if I
> can use a config instead of a config -r ? If using a config without the
> -r option is dangerous, I think it shouldn't be the default. Is it the
> case ?
> 

-- 
Stephen Montgomery-Smith
Department of Mathematics, University of Missouri, Columbia, MO 65211
Phone 573-882-4540, fax 573-882-1869
http://www.math.missouri.edu/~stephen  stephen@math.missouri.edu


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