Described herein is a cache coherency protocol having five states: Modified, Exclusive, Shared, Invalid and Forward (MESIF). The MESIF cache coherency protocol includes a Forward (F) state that designates a single copy of data from which further copies can be made. A cache line in the F state is used...http://www.google.com/patents/US20040123046?utm_source=gb-gplus-sharePatent US20040123046 - Forward state for use in cache coherency in a multiprocessor system
