[Fedora-xen] howto hide pci devices?

[Mike Wright]

Hi all,

Using 3.8.1-201.fc18.x86_64

This kernel has xen-pciback available only as a module so adding it to 
the kernel command line doesn't work.

I added a file:

   /etc/modprobe.d/xen-pciback.conf

that contains one line:

   options xen-pciback hide=(00:14.2)(01:05.1)

thinking that would accomplish the same thing but it doesn't work for me.

Following a reboot lspci shows the devices are still there.

Am I missing a step or is recompiling the kernel the only alternative?

TIA