From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <jbeulich@novell.com>
Subject: Re: [PATCH] x86: change IO-APIC ack method
	defaultforsingle IO-APIC systems
Date: Wed, 21 Jan 2009 16:44:45 +0000
Message-ID: <49775F0D.76E4.0078.0@novell.com>
References: <4977447E.76E4.0078.0@novell.com>
	<C59CFEA3.21AD8%keir.fraser@eu.citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: quoted-printable
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C59CFEA3.21AD8%keir.fraser@eu.citrix.com>
Content-Disposition: inline
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: xen-devel@lists.xensource.com
List-Id: xen-devel@lists.xenproject.org

>>> Keir Fraser <keir.fraser@eu.citrix.com> 21.01.09 17:32 >>>
>Well, it seems not great to avoid the new ack_type for some unknown bug. =
And
>noone else has run with your patch and zero other issues with the new

Many people have - all users of SLE10 (from GA over SP1 to SP2), SuSE
10.2, 10.3, 11.0, 11.1, and all betas and RCs so far available for SLE11.

>ack_type have been reported. So this seems to be papering over a rather =
rare
>and potentially nasty underlying issue. On the other hand, perhaps old
>ack_type is preferable (faster) if we can be sure we're on a system where =
it
>is safe. Hmmm.

Jan