Hello all, (Resend: I cropped out too much and have added 'pciconf -lv' output) I have been working with Roger Pau Monne to bring FreeBSD Dom0 support to a production-ready state but we appear to have hit an IOMMU issue. Hardware: Lenovo ThinkPad T420 i7-2640M CPU @ 2.80GHz with 16GB RAM. I am attaching my console logs which first show my loader.conf file the DomU .cfg file and then DomU boot with Xorg starting. In the end I get: (XEN) **************************************** (XEN) Panic on CPU 2: (XEN) queue invalidate wait descriptor was not executed (XEN) **************************************** Please let me know if you want me to try any configuration changes. Michael Dexter