Multi-core processing device with invalidation cache tags and methods

A method of data processing comprising:

• providing a cache associated with a processing engine;
• storing a plurality of cache entries such that each cache entry includes a cache line to which data is stored and a corresponding cache tag to which address information associated with data stored in the cache line is stored where the address information includes an invalidation flag with respect to each address stored in the cache tag;
• storing information related to invalidation commands of addresses stored in a cache tag in an invalidation tag associated with the cache tag, wherein the invalidation tag includes invalidation address information in the form of a hash array on a condition that at least a predetermined number of invalidation commands, greater than 1, have been received;
• and setting invalidation flags of cache tags based upon information stored in respective invalidation tags.

A non-transitory computer-readable storage medium storing a set of instructions for execution by a general purpose computer to facilitate manufacture of an integrated circuit that includes:

• a processing component having:
• a cache associated with a processing engine;
• the cache configured to store a plurality of cache entries;
• each cache entry including a cache line configured to store data and a corresponding cache tag configured to store address information associated with data stored in the cache line where the address information includes an invalidation flag with respect to each address stored in the cache tag;
• each cache tag associated with an invalidation tag configured to store information related to invalidation commands of addresses stored in the cache tag, wherein the invalidation tag includes invalidation address information in the form of a hash array on a condition that at least a predetermined number of invalidation commands, greater than 1, have been received;
• and
• the cache configured to set invalidation flags of cache tags based upon information stored in respective invalidation tags.