Subject: Re: A potential step towards modularisation
To: Pavel Cahyna <pcah8322@artax.karlin.mff.cuni.cz>
From: Christoph Hellwig <hch@infradead.org>
List: tech-kern
Date: 02/09/2004 19:33:56
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.