[Xen-users] Passing an entire PCI device to the XEN Guest....

["Ramesh Dhami (VA3UV)" <Ramesh@xxxxxxxxx>]

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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