In message: <20040209193356.A25895@infradead.org>
            Christoph Hellwig <hch@infradead.org> writes:
: On Mon, Feb 09, 2004 at 06:59:14PM +0100, Pavel Cahyna wrote:
: > > (c) kernel does a userspace upcall when new hardware is found
: > >      + doesn't waste memory
: > >      + works fine with later added hardware (even while the kernel
: > >        is running)
: > >      - needs good coordination between kernel and userland.
: > 
: > That, I would eventually expect from the new framework in NetBSD. I
: > don't know this from Linux (is this a 2.6 feature? On 2.4 it works only
: > for USB AFAIK.)
: 
: In Linux 2.4 it works for a few busses only (PCI and USB come to mind),
: in 2.6 there's generic libaray code that used by most busses that can
: be probed in that way.

FreeBSD 5 has it generic in all busses.  Very handy for a lot of
different itches.

Warner