Re: [Xen-devel] Usb passthrough with upstream qemu question

[Fabio Fantoni <fabio.fantoni@xxxxxxx>]

Il 04/10/2013 11:59, George Dunlap ha scritto:
> On 25/09/13 15:11, Pasi Kärkkäinen wrote:
> > On Tue, Sep 24, 2013 at 10:59:18AM +0100, George Dunlap wrote:
> > > On 09/23/2013 03:46 PM, Fabio Fantoni wrote:
> > > > I tested my latest patches about usb controllers (1-2-3) and usb
> > > > redirection (from Spice client) support for upstream qemu and are 
> > > > working.
> > > > I also tested usb passthrough (from dom0) but seems that with older
> > > > -usbdevice paraters is not working.
> > > > I see the qemu docs/qdev-device-use.txt and based on this I tried the
> > > > new parameters, for example:
> > > > device_model_args=["-device","usb-host,vendorid=0x058f,productid=0x6387"] 
> > > >
> > > > With new parameters usb passthrough is working, also with new usb
> > > > controller and also with usb redirection enabled.
> > > > I did all tests using latest xen and qemu version (1.6).
> > > > I think should be good to change upstream qemu parameters for usb
> > > > passthrough on libxl with the new ones.
> > > Yes, I think it would be better.  The main difficulty is that the
> > > libxl parameter is basically the old-style usbdevice parameter
> > > passed straight through.  To support the current libxl parameter
> > > with the new qemu would mean interpreting the usbdevice parameter
> > > and translating it into the new-style parameter.
> > >
> > > My USB hot-plug series begins to introduce a more reasonable
> > > interface for USB devices. Once that's in, we can think about
> > > introducing a similar new interface for creating domains, that
> > > should match the new way of specifying devices better.  Then we
> > > could just say, "If you're using spice, you have to use the new
> > > interface."
> > >
> > > Unfortunately, it's looking like the USB hot-plug series may not
> > > make it into 4.4 unless someone else can pick it up (or unless we
> > > slip the feature freeze).
> > Hi,
> >
> > Is the latest version of the usb hotplug series posted to xen-devel,
> > or are these not-yet-posted changes in your (private) tree?
> >
> > Just wondering if someone else wants to take a look at that.
> The latest patches I posted were version 6; the 1/2 can be found here:
>
> http://marc.info/?l=xen-devel&m=136638728928743
>
> I can't remember if I went through and made any changes as a result of 
> comments or not; My latest local version can be found here:
> git://xenbits.xen.org/people/gdunlap/xen.git out/hvm-usb-hotplug.v6-plus
>
>  -George
Thanks for reply, I see your patches but I didn't found changes on "xl 
create" parts.
Please could you keep an eye on my yesterday's mail about "xl create" 
part changes?
http://lists.xen.org/archives/html/xen-devel/2013-10/msg00157.html
For now I'm trying to do patch for basic spice support to pv.
After that I'll try to do a patch for changes usb qemu parameters to 
make usb passthrough full working also with usb2,usb3 and usb 
redirection enabled ifno one else can do.
Thanks for any reply.

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