[Fedora-xen] Problem assigning a usb or pci port to a domU

[Pascal Parrot]

Yoshi-san, Thank you for the link.

The link suggests to build from the source and set the parameters CONFIG_PCI 
and CONFIG_XEN_PCIDEV_FRONTEND to "y". These parameters are set to "y" in 
xen0 and the xen documentation says that it is possible to use xen0 in the 
domains and it might be easier to do than to build from the source. quote 
"The ``0'' suffixed privileged versions can be used to boot the system, as 
well as in driver domains and unprivileged domains."

How can I make my domU use the xen0 kernel?

I downloaded xen0 in the domU but the domain will not boot from it and it 
gives me an error (Error: (22, 'Invalid argument')). When I use the"kernel" 
parameter in the configuration file of the domU, it does not seem to have 
any effect. I am still prompted for the kernel to use (grub).

Pascal