Re: [Xen-devel] PV USB Use Case for Xen 4.x

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Mon, Aug 20, 2012 at 03:48:45PM -0400, Tom Parker wrote:
> >
> >> Currently we use PVUSB to attach a USB Smartcard reader through our
> >> dom0 (SLES 11 SP1) running on an HP Blade Server with the Token
> >> mounted on an internal USB Port to our domU CA server (SLES 11)
> >>
> >> The config file syntax is broken so we have to manually attach (I have
> >> it scripted) whenever our hosts reboot (which is almost never.)
> > Can you give an example of what the syntax *should* be?
> There used to be some data in the wiki or in an initial presentation on
> PVUSB but as it has never worked for me.  I don't remember how it worked.
>

http://wiki.xen.org/wiki/Xen_USB_Passthrough

> >
> > Do you happen to know if this uses the PVUSB drivers or some other
> > mechanism? "lsmod" in both dom0 and domU should provide a clue if the
> > drivers are loaded.
> Looks like it: 
> 
> dom0
> mgaxen1:~ # lsmod | grep usb
> usbbk                  23503  0
> xenbus_be               3952  4 usbbk,netbk,blkbk,blktap
> usbhid                 50900  0
> hid                    83977  1 usbhid
> usbcore               221920  5 usbbk,usbhid,uhci_hcd,ehci_hcd
> 
> domU
> mgaca:~ # lsmod | grep usb
> usbcore               220777  3 xen_hcd
>

So this looks like the PVUSB drivers (usbback/usbfront) from xen 
unmodified_drivers 
and/or from Suse's xenlinux forward-ported patches.

There's also a PVUSB port to pvops kernels, it's available in konrad's git tree.


> >
> > Does this work for both PV and HVM guests or do you only use one or the
> > other?
> I only use PV guests.
>

PVUSB works for both PV and HVM guests.
And James Harper's GPLPV Windows drivers contain PVUSB frontend driver for 
Windows.


-- Pasi


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel