From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1LzZAI-0003PE-6M for qemu-devel@nongnu.org; Thu, 30 Apr 2009 12:31:14 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1LzZAC-0003OE-GN for qemu-devel@nongnu.org; Thu, 30 Apr 2009 12:31:12 -0400 Received: from [199.232.76.173] (port=42763 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1LzZAC-0003OB-Cm for qemu-devel@nongnu.org; Thu, 30 Apr 2009 12:31:08 -0400 Received: from mx20.gnu.org ([199.232.41.8]:7462) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1LzZAC-0007TZ-4V for qemu-devel@nongnu.org; Thu, 30 Apr 2009 12:31:08 -0400 Received: from mail.codesourcery.com ([65.74.133.4]) by mx20.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1LzZAB-0003yH-4W for qemu-devel@nongnu.org; Thu, 30 Apr 2009 12:31:07 -0400 From: Paul Brook Subject: Re: [Qemu-devel] Re: [PATCH 9/9] Introduce VLANClientState::cleanup() Date: Thu, 30 Apr 2009 17:31:03 +0100 References: <1239812969-8320-2-git-send-email-markmc@redhat.com> <200904301702.32282.paul@codesourcery.com> <49F9CFCA.8000002@redhat.com> In-Reply-To: <49F9CFCA.8000002@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200904301731.04902.paul@codesourcery.com> List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Avi Kivity Cc: Mark McLoughlin , Anthony Liguori , Marcelo Tosatti , qemu-devel@nongnu.org, Markus Armbruster On Thursday 30 April 2009, Avi Kivity wrote: > Paul Brook wrote: > >> Sure, you can short-ciruit the case where you have a pair of devices, > >> but then you need to revoke posted receive descriptors. > > > > Isn't the same true with a point-point API? When you add a third device > > to the vlan you're going to have to break the tap-guest link, and insert > > a proxy in the middle. > > I thought with a point-to-point API, you would not actually be inserting > any third device. That's a fair chunk of functionality you just lost then. Paul