Xen users - Dec 2009 - Passing an entire PCI device to the XEN Guest....

OK so instead of passing a USB device, I tried to pass the entire USB 
device.

Here''s the device as seen on the HOST:

[root@VE3RSD-TEST ~]# lspci | grep USB
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) USB UHCI #1 (rev 04)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) USB UHCI #2 (rev 04)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) USB UHCI #3 (rev 04)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) USB UHCI #4 (rev 04)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 
Family) USB2 EHCI Controller (rev 04)
[root@VE3RSD-TEST ~]#



It''s the last device 00:1d.7

So I attempted to hide it from the HOST by using pci.hideback in the 
kernel boot options in /boot/drub/menu.lst:

title CentOS (2.6.18-164.6.1.el5xen)
         root (hd0,0)
         kernel /xen.gz-2.6.18-164.6.1.el5
         module /vmlinuz-2.6.18-164.6.1.el5xen ro 
root=/dev/VolGroup00/LogVol00 rhgb pciback.hide=(00:1d.7)
         module /initrd-2.6.18-164.6.1.el5xen.img


So once the HOST boots up, I can still see the device on the HOST.... 
what I am I doing wrong?

Secondly (consequently), when I try and start the guest VM, I get the 
following error:

Error: pci: PCI Backend does not own device 0000:00:1d.7
See the pciback.hide kernel command-line parameter or
bind your slot/device to the PCI backend using sysfs


(I have specified the PCI device in the config file for the guest VM).


Appreciate any help that I can get .... before I trash the idea of using 
a VM for my project!

Thx,

Ramesh.

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