Patent ID: 11934307
Assignee: ARM LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 10:
11. The apparatus as claimed in claim 1, wherein for at least one of the snoop filter tables the snoop control circuitry is arranged, when seeking to allocate new coherence data to an entry within a given set of that snoop filter table when all entries within that given set currently store valid coherence data, to apply a lazy promotion policy to identify whether, based on the addresses of the valid coherence data stored in the given set, there is an available recipient entry in an adjacent higher level snoop filter table to receive the valid coherence data from a source entry in the given set, and in that event to move the valid coherence data from the source entry in the given set to the available recipient entry in the adjacent higher level snoop filter table, and to then allocate the new coherence data to the source entry in the given set.