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From: Benjamin Herrenschmidt <benh@au1.ibm.com>
Date: Thu, 07 Jun 2012 19:17:28 +1000
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Subject: Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: Hans de Goede <hdegoede@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, li zhang <zhlcindy@gmail.com>, qemu-devel@nongnu.org, zhlcindy@linux.vnet.ibm.com

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).

Cheers,
Ben.