1. In a system comprising a guest operating system, a host, host virtual address space and host physical address space, performing a method comprising: determining by said host a contiguous portion of host physical address space for use by said guest operating system; calculating a first reusable offset value, said first reusable offset value comprising a difference between an address within a guest physical address space and an address of a same memory location within said contiguous portion of host physical address space; subsequently performing address translation operations using said reusable offset values when storing guest operating system data in host memory.