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From: Marcel Moolenaar <xcllnt@mac.com>
To: ross@grinz.com
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Subject: Re: kernel panic on Xserve G4 -CURRENT
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On Nov 13, 2008, at 10:39 AM, Ross Gohlke wrote:

> ## UP
> % dmesg
> FreeBSD 8.0-CURRENT #0: Tue Nov 11 15:01:01 CST 2008
>    root@rorty.grinz.com:/usr/obj/usr/src/sys/RORTY.8
> WARNING: WITNESS option enabled, expect reduced performance.
> cpu0: Motorola PowerPC 7455 revision 2.1, 1000.00 MHz
> cpu0: HID0 8450c0bc<EMCP,TBEN,NAP,DPM,ICE,DCE,SGE,BTIC,LRSTK,FOLD,BHT>
> real memory  = 2135240704 (2036 MB)
> avail memory = 2067062784 (1971 MB)
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> cpu0: dev=ff87f908 (BSP)
> cpu1: dev=ff880bc8

Hmmm, this is not an UP kernel. UP kernels don't count CPUs
and don't announce themselves with/as FreeBSD/SMP.

You need to remove the SMP option from your configuration
in order to create an UP kernel.

FYI,

-- 
Marcel Moolenaar
xcllnt@mac.com