Re: [Xen-users] usb passthrough

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Sat, Feb 27, 2010 at 10:36:46AM -0500, chris wrote:
> James,
> 
> Any idea what version it broke at? Do you need help with testing? I'd
> be willing to help you if I can.
> 

Also remember you need to have the usbback driver in dom0.. pvops dom0
doesn't have usbback yet.

-- Pasi

> - chris
> 
> On Sat, Feb 27, 2010 at 10:31 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> > On Sat, Feb 27, 2010 at 10:15:12AM -0500, chris wrote:
> >> My understanding of PVUSB is that it was only for PV domains though
> >> correct? Looked through the links and can't find anything confirming
> >> or denying that.
> >>
> >
> > pvusb is not only for PV guests. It also works with HVM guests.
> >
> > For both PV and HVM guests it requires the pvusb frontend driver in the 
> > guest kernel.
> > For Windows the GPLPV drivers have pvusb frontend, but it's not in a 
> > working state atm, afaik.
> >
> > -- Pasi
> >
> >> - chris
> >>
> >> On Sat, Feb 27, 2010 at 7:49 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote:
> >> > On Fri, Feb 26, 2010 at 10:26:29PM -0500, Chris wrote:
> >> >> That makes sense however one would think USB 2.0 support would be a good
> >> >> feature to have. There's quite a bit of people looking to utilize pci
> >> >> passthrough and I'd imagine USB passthrough would be similarly useful
> >> >>
> >> >
> >> > That's why pvusb was developed.. it allows usb 2.0 speeds/functionality 
> >> > :)
> >> >
> >> > -- Pasi
> >> >
> >> >> Sent from my iPhone
> >> >>
> >> >> On Feb 26, 2010, at 7:36 PM, "James Harper"
> >> >> <james.harper@xxxxxxxxxxxxxxxx> wrote:
> >> >>
> >> >>>>
> >> >>>> I wonder why it's limited to 1.1 i would imagine that is a hard coded
> >> >>>> limit but given a faster system shouldn't the emulation be faster?
> >> >>>> Who
> >> >>>> could shed more light on why?
> >> >>>>
> >> >>>
> >> >>> Well if it talks to the device in '1.1 mode' then the limit will still
> >> >>> apply.
> >> >>>
> >> >>> At a guess, maybe the 1.1 hardware interface is a bit simpler? I
> >> >>> suspect that they already implemented USB 1.1 to support the mouse and
> >> >>> tablet interface, and passthrough was not much harder, but 2.0/3.0
> >> >>> implementation would have been a lot more work.
> >> >>>
> >> >>> James
> >> >
> >

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