Cache replacement control

A method comprising:

• in response to a cache request specifying a target address missing in the cache, selecting a victim cache entry to be replaced with a new cache entry, the cache request specifying a partition identifier indicative of an execution environment associated with the cache request, and the victim cache entry being selected based on re-reference interval prediction (RRIP) values for a candidate set of cache entries, the RRIP value for a given cache entry being indicative of a relative priority with which the given cache entry is to be selected as the victim cache entry;
• selecting, based on the partition identifier specified by the cache request, configurable replacement policy configuration data associated with the partition identifier;
• and
• setting the RRIP value of the new cache entry to an initial value selected based on the selected configurable replacement policy configuration data associated with the partition identifier.

A non-transitory computer-readable medium to store computer-readable code for fabrication of an apparatus comprising:

• a cache comprising a plurality of cache entries;
• and
• cache replacement control circuitry to select, in response to a cache request specifying a target address missing in the cache, a victim cache entry to be replaced with a new cache entry, the cache request specifying a partition identifier indicative of an execution environment associated with the cache request;
• in which:
• the cache replacement control circuitry is configured to:
• select the victim cache entry based on re-reference interval prediction (RRIP) values for a candidate set of cache entries, the RRIP value for a given cache entry being indicative of a relative priority with which the given cache entry is to be selected as the victim cache entry;
• select, based on the partition identifier specified by the cache request, configurable replacement policy configuration data associated with the partition identifier;
• and
• set the RRIP value of the new cache entry to an initial value selected based on the selected configurable replacement policy configuration data associated with the partition identifier.