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Re: [Xen-users] How to present the vusb device entry in the xenstore

On Tue, 2013-06-18 at 08:51 +0800, Bei Guan wrote:
> Hi,
> I'd like to use the pvusb device in xen-4.3 unstable. However, when I
> use the command "xenstore-ls /local/domain/domId/device" in my VM,
> there's no "vusb" device presented.

Which toolstack are you using?

Which kind of guest (PV or HVM or PVHVM) is it? Which kernels are you
using in dom0 and domU?

I'm not sure which (emulated USB device passthrough or full PV USB) you
are referring to as "vusb".

AFAIK for xl in 4.3 only USB passthrough to HVM domains via device model
emulation of the host controller is supported.

Support for PVUSB is on the cards for 4.4 I think, although AIUI it is
somewhat blocked on someone stepping up and taking responsibility for
the PVUSB driver side of things.

I have a vague feeling there is also conceptually a third type of USB
passthrough, but I can't quite remember what it consists of.

> Here, "0ea0:2168"is the ID of a 128M usb disk and got using the lsusb
> command.

In this case you could presumably instead export the corresponding
dom0 /dev/sdX node to the guest as a disk device.


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