1. A method for managing a translation look-aside buffer (TLB) of an emulated machine, the method comprising: emulating a machine, the emulation comprising an emulated processor and an emulated translation look-aside buffer (TLB); defining an extended TLB storage arranged to provide an extension to the emulated TLB; in response to displacement of an entry from the emulated TLB, storing the displaced entry in the extended TLB storage; in response to a search of the emulated TLB failing to locate a requested TLB entry, searching the extended TLB storage for the requested TLB entry; returning a result of the search of the extended TLB storage; monitoring a number of invalid entries in the emulated TLB; and if the number of invalid entries equals a number of total non-locked entries in the emulated TLB, then flushing the extended TLB storage.