[Xen-devel] SR-IOV function passthrough to a PV domU

[Chris Reeves <chrisr@xxxxxxxxxxxxxxxx>]

I'm trying to pass through an SR-IOV virtual function to a PV domU.
The pci passthrough seems to work, but the virtual function never shows
up on the pci bus of the domU.  All I see is a message stating:
[  342.002602] pcifront pci-0: Rescanning PCI Frontend Bus 0000:00

I'm using kernel 2.6.31.12-0.1-xen from OpenSUSE on the dom0 and domU
and Xen 4.0.  I've recompiled with the CONFIG_XEN_PCIDEV_FE_DEBUG option
set, but I don't get any additional output when attaching the device.

Is it possible to use pci passthrough with SR-IOV virtual functions to a
PV domU?

I noticed in this thread:
http://lists.xensource.com/archives/html/xen-devel/2010-03/msg00082.html
That someone mentioned a specific SR-IOV pcifront driver.
Does anyone know where this driver may be available?

For what it's worth, I've also tried kernel 2.6.34 with the xen patches
from http://code.google.com/p/gentoo-xen-kernel/downloads/list and I get
the same results.

Thanks,
Chris

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