From owner-freebsd-current@FreeBSD.ORG  Fri Feb 20 10:19:43 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 835F016A4CE
	for <current@FreeBSD.org>; Fri, 20 Feb 2004 10:19:43 -0800 (PST)
Received: from sarevok.idg.nl (unknown [213.160.253.234])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 5568C43D1D
	for <current@FreeBSD.org>; Fri, 20 Feb 2004 10:19:43 -0800 (PST)
	(envelope-from mdev@sarevok.idg.nl)
Received: by sarevok.idg.nl (Postfix, from userid 100)
	id A08F4B83A; Fri, 20 Feb 2004 19:19:42 +0100 (CET)
From: Melvyn Sopacua <freebsd-current@webteckies.org>
Organization: WebTeckies.org
To: "M. Warner Losh" <imp@bsdimp.com>
Date: Fri, 20 Feb 2004 19:19:42 +0100
User-Agent: KMail/1.5.94
References: <200402170846.17399.freebsd-current@webteckies.org>
	<39796.1077013415@critter.freebsd.dk>
	<20040218.063204.74403147.imp@bsdimp.com>
In-Reply-To: <20040218.063204.74403147.imp@bsdimp.com>
MIME-Version: 1.0
Content-Type: multipart/signed;
  protocol="application/pgp-signature";
  micalg=pgp-sha1;
  boundary="Boundary-02=_++kNAGhqYr+KcFa";
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <200402201919.42458.freebsd-current@webteckies.org>
cc: Poul-Henning Kamp <phk@phk.freebsd.dk>
cc: current@FreeBSD.org
Subject: Re: Review/Test: Pseudo-device unit number management patch
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 20 Feb 2004 18:19:43 -0000


--Boundary-02=_++kNAGhqYr+KcFa
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline

On Wednesday 18 February 2004 14:32, M. Warner Losh wrote:
> In message: <39796.1077013415@critter.freebsd.dk>
>
>             "Poul-Henning Kamp" <phk@phk.freebsd.dk> writes:
> : Current our handing is that if it disappears, it's gone, if it comes
> : back it's probably a new one anyway.
>
> Yes.  If the hardware goes away and comes back, it can be very
> difficult to know if you have the same hardware or different
> hardware.=20

=46or something as critical as a keyboard, would it be possible:
=2D to keep the current layer in tact, but fool the layer that the device i=
s=20
always there?
=2D store the last used keyboard somewhere and if no keyboard is found on b=
oot,=20
assume the last one used and start emulating it's existence

All this of course, controllable by a kernel / bootloader / sysctl option, =
so=20
that environments where keyboard switching is normal do not suffer.

=2D-=20
Melvyn

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
=46reeBSD sarevok.idg.nl 5.2-CURRENT FreeBSD 5.2-CURRENT #2: Mon Feb 16 19:=
59:52=20
CET 2004    =20
root@sarevok.webteckies.org:/usr/obj/usr/src/sys/SAREVOK_NOAPM_NODEBUG  i386
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D

--Boundary-02=_++kNAGhqYr+KcFa
Content-Type: application/pgp-signature
Content-Description: signature

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (FreeBSD)

iD8DBQBANk++Ov9JNmfFN5URAkuuAJ9n7cnnvON6JytaP61Bx6lYwbFDmwCgsHEk
jJjCXjNLoBP5MQcG13KcBAc=
=T8be
-----END PGP SIGNATURE-----

--Boundary-02=_++kNAGhqYr+KcFa--