From owner-freebsd-questions@FreeBSD.ORG  Thu Oct  9 23:42:43 2008
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 76A791065687
	for <freebsd-questions@freebsd.org>;
	Thu,  9 Oct 2008 23:42:43 +0000 (UTC) (envelope-from mike@sentex.net)
Received: from smarthost1.sentex.ca (smarthost1.sentex.ca [64.7.153.18])
	by mx1.freebsd.org (Postfix) with ESMTP id 430EF8FC20
	for <freebsd-questions@freebsd.org>;
	Thu,  9 Oct 2008 23:42:43 +0000 (UTC) (envelope-from mike@sentex.net)
Received: from Mobile2.sentex.ca (cage.simianscience.com [64.7.134.1])
	by smarthost1.sentex.ca (8.14.3/8.14.3) with SMTP id m99NFao8060172
	for <freebsd-questions@freebsd.org>;
	Thu, 9 Oct 2008 19:15:36 -0400 (EDT) (envelope-from mike@sentex.net)
From: mike@sentex.net
To: freebsd-questions@freebsd.org
Date: Thu, 09 Oct 2008 19:15:22 -0400
Message-ID: <5r3te4946bdoqso2ull1g1c4p7dsdhdua4@4ax.com>
References: <20081009225136.6ca47d3b@Picasso.Zahemszky.HU>
	<20081009214954.GA31617@owl.midgard.homeip.net>
In-Reply-To: <20081009214954.GA31617@owl.midgard.homeip.net>
X-Mailer: Forte Agent 4.2/32.1118
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
X-Scanned-By: MIMEDefang 2.64 on 64.7.153.18
Subject: Re: irq256 ????
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 09 Oct 2008 23:42:43 -0000

On Thu, 9 Oct 2008 23:49:54 +0200, in sentex.lists.freebsd.questions
you wrote:
>>=20
>> What's that? (world and kernel are in sync)
>
>It is an MSI-style interrupt [MSI=3DMessage Signaled Interrupt] =
(available on
>PCI-E devices and a few PCI/PCI-X devices.) They get allocated fake
>irq-numbers starting at 256.
>
>I.e. it is a feature, and a bug or indication of any problem.

And you can see what devices are MSI capable with
pciconf -lvc

e.g

em0@pci0:5:0:0: class=3D0x020000 card=3D0x348d8086 chip=3D0x108c8086
rev=3D0x03 hdr=3D0x00
    vendor     =3D 'Intel Corporation'
    device     =3D '82573E Intel Corporation 82573E Gigabit Ethernet
Controller (Copper)'
    class      =3D network
    subclass   =3D ethernet
    cap 01[c8] =3D powerspec 2  supports D0 D3  current D0
    cap 05[d0] =3D MSI supports 1 message, 64 bit enabled with 1 message
    cap 10[e0] =3D PCI-Express 1 endpoint=20

	---Mike