[Xen-users] Cannot Set QIE Field for Queue Invalidation

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

As a follow-up to my attempts to pass PCI through to HVM domUs, I'm attempting 
to use VT-d (aka IOMMU) with Xen 3.3.1, and am receiving the following error 
during Xen hypervisor loading (at boot time) if I try to set iommu=1:

Cannot set QIE field for Queue Invalidation

The system then reboots.  I tried using iommu=no-qinval, but this didn't seem 
to help.  Can anyone provide any hints as to what's going on?

Thanks - Nick



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