1. A method, comprising: executing a first virtual machine application within a first virtual machine; executing a second virtual machine application within a second virtual machine; and storing a plurality of TLB (translation look aside buffer) entries for the first virtual machine application and the second virtual machine application within a TLB of the host computer system, wherein at least one of the plurality of TLB entries is a global TLB entry, and wherein ones of the entries have respective context identifiers and have respective machines instantiation fields for nesting virtual machines recursively, and wherein the respective context identifiers are managed via hard partitioning.