In one embodiment, a processor mode is provided for guest software. The processor mode enables the guest software to operate at a privilege level intended by the guest software. When the guest software attempts to perform an operation restricted by the processor mode, the processor mode is exited to...http://www.google.de/patents/US7818808?utm_source=gb-gplus-sharePatent US7818808 - Processor mode for limiting the operation of guest software running on a virtual machine supported by a virtual machine monitor
