STORE STORE A METHOD AND SYSTEM FOR FILTERING THE STORES TO PREVENT ALL STORES FROM HAVING TO SNOOP CHECK AGAINST ALL WORDS OF A CACHE

摘要

In a processor, a method is disclosed for filtering stores to prevent all stores from having to snoop inspection of all the words in the cache. This method includes the steps of implementing a cache, where stores are snooping caches to see if there are address matches to maintain consistency; Marking a portion of the cache line when a given core of the plurality of cores loads from a portion of the cache line by using an access mask; Inspecting an access mask upon execution of subsequent stores to a cache line; And causing a prediction error when a subsequent store to a portion of the cache line sees a previous mark from load in the access mask.