From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:38704) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScZ2h-0007sW-Jj for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:30:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ScZ2b-0003hD-1O for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:30:11 -0400 Received: from e23smtp07.au.ibm.com ([202.81.31.140]:33488) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ScZ2a-0003av-FQ for qemu-devel@nongnu.org; Thu, 07 Jun 2012 05:30:04 -0400 Received: from /spool/local by e23smtp07.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 7 Jun 2012 09:21:10 +1000 Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay04.au.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id q579MRlN60424354 for ; Thu, 7 Jun 2012 19:22:28 +1000 Received: from d23av04.au.ibm.com (loopback [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id q579Tcls020914 for ; Thu, 7 Jun 2012 19:29:39 +1000 Message-ID: <4FD07481.3000605@linux.vnet.ibm.com> Date: Thu, 07 Jun 2012 17:29:37 +0800 From: Li Zhang 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> <4FD06EDF.7070401@redhat.com> <1339060648.24838.20.camel@pasglop> In-Reply-To: <1339060648.24838.20.camel@pasglop> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options Reply-To: zhlcindy@linux.vnet.ibm.com List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Benjamin Herrenschmidt Cc: Hans de Goede , Anthony Liguori , li zhang , Gerd Hoffmann , qemu-devel@nongnu.org On 06/07/2012 05:17 PM, Benjamin Herrenschmidt wrote: > On Thu, 2012-06-07 at 11:05 +0200, Gerd Hoffmann wrote: >>> 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 :) > > I don't think we've tried it on big-endian yet :-) Li, is that something > you team can have a look at (separately from these patches). > Sure, we can have a look at it. :) > Cheers, > Ben. > > -- Best Regards Li IBM LTC, China System&Technology Lab, Beijing