Arm limited (20250110874). CACHE LOOKUP RESPONSE FILTERING
CACHE LOOKUP RESPONSE FILTERING
Organization Name
Inventor(s)
Fabrice Jean Verplanken of Sheffield GB
Nikita PrakashChandra Bhandari of Austin TX US
CACHE LOOKUP RESPONSE FILTERING
This abstract first appeared for US patent application 20250110874 titled 'CACHE LOOKUP RESPONSE FILTERING
Original Abstract Submitted
cache invalidation circuitry responds to a cache invalidation command specifying invalidation scope information indicative of at least one invalidation condition, to control a cache to perform an invalidation process to invalidate cache entries satisfying the invalidation condition(s). cache lookup circuitry issues to the cache a cache lookup request specifying address information, to request that the cache returns a cache lookup response. cache lookup response filtering circuitry is responsive to a given hit-indicating cache lookup response which provides cached information and invalidation qualifying information returned from a corresponding valid cache entry, to determine whether the given hit-indicating cache lookup response conflicts with an in-progress cache invalidation command, based on the invalidation scope information specified by the in-progress cache invalidation command and the invalidation qualifying information, and when conflict is detected, causes the given hit-indicating cache lookup response to be treated as a miss-indicating cache lookup response.