From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:58638) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScYfE-0004or-Pj for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:06:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ScYf4-00075L-O9 for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:05:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38252) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScYf4-00075A-Fm for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:05:46 -0400 Message-ID: <4FD06EDF.7070401@redhat.com> Date: Thu, 07 Jun 2012 11:05:35 +0200 From: Gerd Hoffmann MIME-Version: 1.0 References: <1338953515.7150.150.camel@pasglop> <4FCEEDC5.7090807@us.ibm.com> <1339017219.7150.170.camel@pasglop> <4FD06725.70905@redhat.com> <1339058438.24838.15.camel@pasglop> <4FD06BE3.3070506@redhat.com> In-Reply-To: <4FD06BE3.3070506@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Hans de Goede Cc: Anthony Liguori , Benjamin Herrenschmidt , li zhang , qemu-devel@nongnu.org, zhlcindy@linux.vnet.ibm.com Hi, > We (me and Gerd Hoffmann) have investigated that, and experimented with it. > It will work for simply devices, but isochronous devices break. The real > solution at least for x86 vms is to get the XHCI emulation finished, as > the XHCI controller has a much nicer hw interface from an emulation pov, > and it can handle usb 1-3 devices. xhci emulation (in qemu-1.1) is good enougth to handle usb-tablet, so feel free to play with it today :) cheers, Gerd