[Xen-users] xm dmesg question

[Jeroen Groenewegen van der Weyden <groen692@xxxxxxxxx>]

Hello,

I'm have a system on which I have vt-d passthrough enabled. The system 
and the  passthrough feature works ok. However there are some messages 
in the log at startup which indicate a problem of some kind. I prints 
out a fault overflow (see snippet below).
Anybody know the cause and or impact of this messages?

openSUSE 11.1 64bit
xen : 3.3.1_18546_06-1.5 (other versions give the same messages)
mobo: intel dq45cb (latest firmware)

==== xm dmesg begin======

(XEN) Brought up 2 CPUs
(XEN) I/O virtualisation enabled
(XEN) I/O virtualisation for PV guests disabled
(XEN) [VT-D]iommu.c:765: iommu_page_fault: iommu->reg = ffff828bfff56000
(XEN) [VT-D]iommu.c:734: iommu_fault_status: Fault Overflow
(XEN) [VT-D]iommu.c:737: iommu_fault_status: Primary Pending Fault
(XEN) [VT-D]iommu.c:719: iommu_fault:DMA Write: 0:2.0 addr 500000000 
REASON 5 iommu->reg = ffff828bfff56000
(XEN) print_vtd_entries: iommu = ffff83007b601f80 bdf = 0:2:0 gmfn = 
500000  

==== xm dmesg end ======

Best regards,

Jeroen

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