From owner-freebsd-xen@FreeBSD.ORG  Tue Apr  5 08:50:13 2011
Return-Path: <owner-freebsd-xen@FreeBSD.ORG>
Delivered-To: freebsd-xen@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 2D754106564A
	for <freebsd-xen@hub.freebsd.org>; Tue,  5 Apr 2011 08:50:13 +0000 (UTC)
	(envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 01E0E8FC13
	for <freebsd-xen@hub.freebsd.org>; Tue,  5 Apr 2011 08:50:13 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id p358oC31042899
	for <freebsd-xen@freefall.freebsd.org>; Tue, 5 Apr 2011 08:50:12 GMT
	(envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
	by freefall.freebsd.org (8.14.4/8.14.4/Submit) id p358oCoh042898;
	Tue, 5 Apr 2011 08:50:12 GMT (envelope-from gnats)
Date: Tue, 5 Apr 2011 08:50:12 GMT
Message-Id: <201104050850.p358oCoh042898@freefall.freebsd.org>
To: freebsd-xen@FreeBSD.org
From: Janne Snabb <snabb@epipe.com>
Cc: 
Subject: Re: kern/154302: Linux suffers from the same problem
X-BeenThere: freebsd-xen@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: Janne Snabb <snabb@epipe.com>
List-Id: Discussion of the freebsd port to xen - implementation and usage
	<freebsd-xen.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-xen>,
	<mailto:freebsd-xen-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-xen>
List-Post: <mailto:freebsd-xen@freebsd.org>
List-Help: <mailto:freebsd-xen-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-xen>,
	<mailto:freebsd-xen-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 05 Apr 2011 08:50:13 -0000

The following reply was made to PR kern/154302; it has been noted by GNATS.

From: Janne Snabb <snabb@epipe.com>
To: bug-followup@FreeBSD.org
Cc:  
Subject: Re: kern/154302: Linux suffers from the same problem
Date: Tue, 5 Apr 2011 08:47:26 +0000 (UTC)

 Just an interesting note about this issue:
 
 I noticed that Linux suffers from the same problem. The Linux driver
 is somehow able to proceed even though getting the mac address
 fails. Therefore this Xen bug/feature does not cause headaches
 there, even though we need a workaround in FreeBSD driver.
 
 Have a look at Red Hat's virtualization guide:
 
 http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Virtualization/sect-Virtualization-Troubleshooting_the_Xen_para_virtualized_drivers-Verifying_the_para_virtualized_drivers_have_successfully_loaded.html
 
 There you will see the following line:
 
 vif vif-0: 2 parsing device/vif/0/mac
 
 ...which is an indication of this very same error condition. 
 
 However according to the Red Hat documentation this just means that
 the PV drivers have successfully loaded :).
 
 --
 Janne Snabb / EPIPE Communications
 snabb@epipe.com - http://epipe.com/