1. A computer system comprising: a memory; and a translation coherence cache coupled to the memory and configured to include i) physical memory addresses but not virtual memory addresses for memory pages and ii) an indicator for individual physical memory addresses cached in the translation coherence cache, wherein the translation coherence cache is configured with indexes comprising the physical memory addresses, and wherein an indicator associated with a physical memory address in the translation coherence cache is operable for indicating whether code on a memory page identified by the physical memory address has been translated.