[dundee] USB in Xen Guest

[gordon dunlop]

2009/2/18 Sean McRobbie <lug at seany.us>

> Hi Gordon,
>
> I am using pciback (PCI forwarding) fine. I think the usb= option is only
> for HVM guests, though I could be wrong.
>
 Yes your right the usb= option is only for HVM

>
> If you need a hand with pciback let me know.
>

 In Centos 5.2 when you do lspci |grep -i USB it gives you the two USB
controllers
USB 00:02.0
USB 00:02.1

Now in Fedora 10 the 00:02.0 controller is designated the OHCI host
controller
where all the normal USB ports e.g. printers are allocated and the 00:02.1
is designated
the EHCI host controller that handles the USB flash drives which is great.
In Centos 5.2 all USB drives are allocated to the USB 00:02.0 OHCI host
controller, due to (I think) an older 2.6.18 kernel. So when I do the
pciback in etc/modprobe.conf stipulating to hide 00:02.0 and I create a new
initrd it knocks off all the usb ports from the host which I do not want.
When I do the pciback on 00:02.1 nothing happens in the guest because the
USB flash is on the OHCI host controller. Obviously if the USB ports were
separated where the USB flash is on the EHCI controller that would be
perfect. Anyway I am going to take a break now , any ideas about this EHCI
controller? I will try to find out later if this is due to kernel
configurations or not.

Gordon

>
> Regards,
> Sean McRobbie
>
>
>
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