From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NKEZX-0006IV-Gi for qemu-devel@nongnu.org; Mon, 14 Dec 2009 12:18:59 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1NKEZS-0006CX-QJ for qemu-devel@nongnu.org; Mon, 14 Dec 2009 12:18:59 -0500 Received: from [199.232.76.173] (port=44965 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NKEZS-0006C1-GH for qemu-devel@nongnu.org; Mon, 14 Dec 2009 12:18:54 -0500 Received: from mx1.redhat.com ([209.132.183.28]:44566) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1NKEZR-0000Zs-Rj for qemu-devel@nongnu.org; Mon, 14 Dec 2009 12:18:54 -0500 Received: from int-mx05.intmail.prod.int.phx2.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.18]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id nBEHIrCK020204 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Mon, 14 Dec 2009 12:18:53 -0500 Message-ID: <4B267365.5090608@redhat.com> Date: Mon, 14 Dec 2009 18:18:29 +0100 From: Gerd Hoffmann MIME-Version: 1.0 Subject: Re: [Qemu-devel] Re: [PATCH RFC] virtio: add features qdev property References: <20091213204341.GA25823@redhat.com> <4B260846.9020503@redhat.com> <20091214094255.GA32140@redhat.com> <4B261269.7080801@redhat.com> <20091214111046.GB32355@redhat.com> <4B262379.1060009@redhat.com> <20091214135915.GN973@redhat.com> <4B26534D.1060806@redhat.com> <20091214162342.GB5807@redhat.com> In-Reply-To: <20091214162342.GB5807@redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Michael S. Tsirkin" Cc: Markus Armbruster , qemu-devel@nongnu.org On 12/14/09 17:23, Michael S. Tsirkin wrote: > On Mon, Dec 14, 2009 at 04:01:33PM +0100, Gerd Hoffmann wrote: > So how do you do this? > Assume we have -disable_hw_csum. > We want new machine type to have it off, right? > But now you run qemu on host which does > not support hw_csum. With your suggestion > it will not enable hw csum? I have trouble getting the setup you are talking about ... Sounds like hw_csum could be enabled/disabled depending on the hardware capabilities on the host. Is that correct? cheers, Gerd