Re: [Xen-devel] [PATCH V4 3/7] libxl: add pvusb API

[Juergen Gross <jgross@xxxxxxxx>]

On 06/16/2015 01:45 PM, Ian Jackson wrote:
> Juergen Gross writes ("Re: [Xen-devel] [PATCH V4 3/7] libxl: add pvusb API"):
> > On 06/16/2015 01:10 PM, Ian Jackson wrote:
> > > AIUI some devices have serial numbers, which means you can distinguish
> > > them ?
> > Yes, they have. The question is whether those are different on multiple
> > instances? With "lsusb" I've found a device with serial number
> > 0123456789ABCD. Do you really believe I'm just lucky owning the one with
> > such a nice serial number? ;-)
> Heh.  I think, though, that this suggests that if the user has devices
> whose serial numbers are actually different, they should be able to
> specify a device by vid/pid/serial.
I think you are right.

The next question: should this be part of libxl or qemu? It should be
possible to extend the qemu <vendorId>:<productId> syntax to
<vendorId>:<productId>:<serial> without too much effort, as libusb
includes some support to obtain the serial number.


Juergen

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