PCI Pass through of atheros card

[Varun Ganesh <vganesh2@xxxxxxxx>]

Hi,

I am trying to make a PCI passthrough of the atheros card to a VM running over KVM. am following the steps given at 
http://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sect-Para-virtualized_Windows_Drivers_Guide-How_SR_IOV_Libvirt_Works.html. but am getting the following errors,

1. Error starting domain: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev'
2. Details:
3. Error starting domain: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev'
4.  
5. Traceback (most recent call last):
6.   File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper
7.     callback(asyncjob, *args, **kwargs)
8.   File "/usr/share/virt-manager/virtManager/engine.py", line 959, in asyncfunc
9.     vm.startup()
10.   File "/usr/share/virt-manager/virtManager/domain.py", line 1114, in startup
11.     self._backend.create()
12.   File "/usr/lib/python2.7/site-packages/libvirt.py", line 333, in create
13.     if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
14. libvirtError: operation failed: failed to retrieve chardev info in qemu with 'info chaqdev'

I am using a Dell Optiplex XE system which has VT-d enabled and Atheros AR5001X+ Wireless Network Adapter. How do i rectify this.

Thanks,
sincerely,
Varun Ganesh