>> ideally, a dumpctl(2) call should be implemented and the setting
>> of dump device moved entirely to userland.
>
>I would not find that "ideal" in the least, because that would
>make it impossible to get a crash dump from a panic that might
>occur during autoconfiguration.
>
>Gordon

Last I checked, the dump device is setup after autoconfiguration.
After all, you don't even know if your dump device exists until
you've probed the device that give you access to it.

--
Justin T. Gibbs
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  FreeBSD: Turning PCs into workstations
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