From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:34175) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QwryF-0006ro-Pu for qemu-devel@nongnu.org; Fri, 26 Aug 2011 04:41:00 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1QwryE-0001D3-Gw for qemu-devel@nongnu.org; Fri, 26 Aug 2011 04:40:59 -0400 Received: from mx1.redhat.com ([209.132.183.28]:64561) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1QwryE-0001Cz-8b for qemu-devel@nongnu.org; Fri, 26 Aug 2011 04:40:58 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id p7Q8ev4n026430 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 26 Aug 2011 04:40:57 -0400 Received: from localhost (vpn1-7-249.ams2.redhat.com [10.36.7.249]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id p7Q8esHx013004 for ; Fri, 26 Aug 2011 04:40:55 -0400 Date: Fri, 26 Aug 2011 09:40:54 +0100 From: "Richard W.M. Jones" Message-ID: <20110826084054.GA24160@amd.home.annexia.org> References: <1314249688.3459.23.camel@lappy> <4E56C334.5070509@codemonkey.ws> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4E56C334.5070509@codemonkey.ws> Subject: Re: [Qemu-devel] Guest kernel device compatability auto-detection List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel On Thu, Aug 25, 2011 at 04:48:36PM -0500, Anthony Liguori wrote: > One would be exposing a well supported device (like IDE emulation) > and having a magic mode that allowed you to basically promote the > device from IDE emulation to virtio-blk. Likewise, you could do > something like that to promote from the e1000 to virtio-net. +1 .. this is what VMware does AIUI. Another way might be to invent a "virtio-IDE" device, which at one level looks like ordinary IDE but has non-standard extensions that are helpful for paravirt. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones New in Fedora 11: Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 70 libraries supprt'd http://fedoraproject.org/wiki/MinGW http://www.annexia.org/fedora_mingw