I have not been able to passthrough any PCI devices using
the latest xen-unstable. I have a DQ45CB, and have successfully passed
devices to guests using 3.4.1.
The latest c/s in my copy of xen-unstable is 20145. I
just started playing around with unstable yesterday, so I can’t tell you
if earlier revisions worked. I’ve tried with various dom0 kernels,
the current 2.6.18.8-xen branch, a xenified 2.6.29.6, and a pvops 2.6.31-rc6,
and in every case I get the same error. I’ve tried both putting
pci= in the config file, and hot-adding the device using xm pci-attach. In
every case, the xm command (either create or pci-attach) fails with the message
“Error: Timed out waiting for device model action”. The
guests in every case are HVM guests, some flavors of Windows, as well as the
Knoppix 5.3.1 DVD.
The relevant xm dmesg output is:
(XEN) PCI add device 00:1b.0
(XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf =
0:1b.0
(XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf
= 0:1b.0
(XEN) [VT-D]io.c:284:d0 VT-d irq bind: m_irq = 37 device = 3
intx = 0
(XEN) [VT-D]iommu.c:1292:d0 domain_context_unmap:PCIe: bdf =
0:1b.0
(XEN) [VT-D]iommu.c:1178:d0 domain_context_mapping:PCIe: bdf
= 0:1b.0
And the messages from qemu-log:
dm-command: hot insert pass-through pci dev
hot add pci slot -2 exceed.
Please let me know what else I need to supply to help
resolve this problem. If I need to enable debugging messages, let me know
the best way to do this.
Doug Magee
djmagee@xxxxxxxxxxxx
