1. A processor comprising: a virtualization system of the processor, the virtualization system comprising a memory virtualization support system including a paging table to provide, during execution of guest software a virtual machine, a reference to a page of guest-physical memory; logic to combine, during execution of the guest software on the virtual machine, the reference to the page of guest-physical memory with a reference to guest-virtual memory to provide a reference to guest-physical memory; an extended paging table to map, during execution of the guest software on the virtual machine, the reference to guest-physical memory to a reference to host-physical memory.