Methods and systems for tracking addresses stored in non-home cache locations

A cache memory system, comprising:

• memory components;
• and
• memory controlling components, wherein said memory controlling components include a system for tracking addresses stored in non-home locations in a cache that comprises:
• a determiner for determining if an address that is to be stored in a cache is to be stored in a non-home location;
• a determiner for determining if a directory has a location available for storing an identifier of said non-home location;
• and
• a storer for storing an identifier of said non-home location in one of said one or more locations of said directory, if one or more locations of said directory are available for storing an identifier of said non-home location, and
• an invalidator for invalidating a non-home location in said cache that corresponds to one of said one or more locations of said directory if none of said one or more locations of said directory are available for storing an identifier of said non-home location, and facilitating a storing of an identifier of said non-home location in said one of said one or more locations.

Cache memory controlling components for tracking addresses stored in non-home locations in a cache, comprising:

• a determiner for determining if an address that is to be stored in a cache is to be stored in a non-home location;
• a determiner for determining if a directory has a location available for storing an identifier of said non-home location;
• a storer for storing an identifier of said non-home location in one of said one or more locations of said directory, if one or more locations of a directory are available for storing an identifier of said non-home location;
• and
• an invalidator for invalidating a non-home location in said cache that corresponds to one of said one or more locations of said directory if none of said one or more locations of said directory are available for storing an identifier of said non-home location, and facilitating a storing of an identifier of said non-home location in said one of said one or more locations.