Apple inc. (20250103496). Coherence Directory Way Tracking in Coherent Agents
Coherence Directory Way Tracking in Coherent Agents
Organization Name
Inventor(s)
Ilya Granovsky of Kiryat Tivon IL
Amanvir Singh Sidana of San Jose CA US
Sandeep Gupta of Santa Clara CA US
Vivek Venkatraman of Sunnyvale CA US
Coherence Directory Way Tracking in Coherent Agents
This abstract first appeared for US patent application 20250103496 titled 'Coherence Directory Way Tracking in Coherent Agents
Original Abstract Submitted
an apparatus includes a plurality of coherent agents, and a coherence directory that includes directory ways for storing coherency information. the coherence directory may be configured to determine that a cache block that is not currently cached among the coherent agents, is stored in a first coherent agent. the coherence directory may be further configured to, in response to this determination, create a particular entry in a selected one of the directory ways. the coherence directory may also be configured to send, to the first coherent agent, an indicator identifying a directory way that includes the entry. in response to a second coherent agent caching the cache block, the coherence directory may update the entry to include the second coherent agent. the first and second coherent agents may be configured to receive copies of the indicator, and to store their copy in locations associated with the cache block.