My CPU is Intel T9300, it supports VT-x, but it does not support VT-d. I am using Xen pvops virtualization. I have a PCI device, and my host system can work without it. So I am thinking if it is possible to pass it to my guest vm.

1 Answer 1


Since version 3.0, Xen has provided PCI passthrough to a paravirtual (PV) guest without VT-d CPU/Motherboard extensions. A PV guest means that the guest is running a special Xen kernel that is aware of the hypervisor. Xen PV guest kernels exist for Linux, NetBSD, FreeBSD, OpenSolaris and Novell Netware operating systems.

Xen cannot provide PCI passthrough to a HVM (fully virtualized) guest without VT-d. An example of an HVM guest would be Windows.

This wiki entry discusses Xen PCI passthrough.

  • It is technically possible actually. Years ago there was the "NativeDom" patch (based on the original passthrough work by Neocleus) that allowed the thing to work on HVM even in the IOMMU-less scenario, albeit with a couple of limitations. Not sure what it has been of it.
    – mirh
    Mar 24, 2020 at 17:09

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.