[Xen-users] PCI-device passthrough to PV Guest is not working

[Naveen BS <naveen.bs@xxxxxxxxxxx>]

Hi,
 
I am running 2.6.18.8-xen kernel as Dom0 with xen 3.3.0. And DomU is PV guest 2.6.31.3 paravirt_ops kernel. PCI-
Device passthrough to DomU is not working in this setup.
   
Some messages from Dmesg Output in DomU.

 PCI: Fatal: No config space access function found
 PCI: System does not support PCI
 PCI: System does not support PCI
 XENBUS: Device with no driver: device/pci/0
 XENBUS: Device with no driver: device/console/0
   
  
Also, I observe that ACPI and APICs are also disabled in DomU. Here are relevant messages.
 ACPI in unprivileged domain disabled.
 ACPI: Interpreter disabled.
 APIC: disable apic facility

Running lspci in DomU lists nothing.
 
What could be the problem? Is PCI-device passthrough to PV guest (2.6.31.3) with xen-3.3.0 supported?
Do I need to try different version of xen/Kernel? or need to try applying some patches?
 
Any help is appreciated.
 
Thanks & Regards
Naveen

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