Ubuntu 14.04 LTS Trusty Tahr Xen and Virtualbox 4.3.10

~$ sudo /etc/init.d/vboxdrv setup
Stopping VirtualBox kernel modules ...done.
Uninstalling old VirtualBox DKMS kernel modulesError! Could not locate dkms.conf file.
File:  does not exist.
Error! There are no instances of module: vboxhost
4.3.10 located in the DKMS tree.
 ...done.
Trying to register the VirtualBox kernel modules using DKMS ...done.
Starting VirtualBox kernel modules ...failed!
  (Running VirtualBox in a Xen environment is not supported)
~$