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[Xen-devel] iommu: mapping reserved region failed - Q35 - VT-D Issue

Xen 3.4 xen-unstable.hg from yesterday with debian etch on 64bit arch
Intel/Lenovo Q35 Mainboard with VT-d enabled

Bootoptions iommu=1 vtd=1
pci.backhide for a PCI-E nvidia graphiccard

xm dmesg Error messages includes:

[VT-D] iommu.c: 1694:d32767 iommu: mapping reserved region failed
[VT-D] iommu.c: 1542:d0 intel_iommu_add_device: context mapping failed

If i try to start my HVM by xm create win2k the system reboots

any ideas?


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