Abstract: There is provided an apparatus, medium and method for cache invalidation. The apparatus comprises a cache having a plurality of entries grouped into a plurality of entry sets. Each entry of the plurality of entries identifies an address range having one of a plurality of predetermined address range sizes. The apparatus further comprises cache invalidation circuitry responsive to a cache invalidation request indicating an address invalidation range to trigger invalidation of entries in the cache that overlap the address invalidation range. The cache invalidation circuitry is configured to operate in one of a plurality of invalidation modes based on the address invalidation range and cache occupancy information indicating address range sizes identified by the plurality of entries in the cache.

Abstract: Each entry in a cache has type information associated therewith to indicate a type associated with the data item stored in that entry. Lookup circuitry responds to a given lookup request by performing a lookup procedure to determine whether a hit is detected, by default performing the lookup procedure for a given subset of multiple supported types. Invalidation circuitry processes an invalidation request specifying invalidation parameters used to determine an invalidation address range and invalidation type information, in order to invalidate any data items held in the cache storage that are both associated with the invalidation address range and have an associated type that is indicated by the invalidation type information.