I am trying to get cpuid flag manipulation working with libvirt and libxl and it seems that libvirt expects to be able to see all the flags that it hopes to pass or mask for a guest on the host system. Sadly the svm and npt flags are masked in dom-0 -- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 alvin@netvel.net ||