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US 10,255,183 B2Granted
Victim buffer for cache coherent systems
AssigneeArteris, Inc.
InventorsCraig Stephen Forrest, David A. Kruckemyer
Life of this patent
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Abstract
In accordance with various aspects of the invention, a recall transaction is issued if a tag filter entry needs to be freed up for an incoming transaction. Directory entries chosen for a recall transaction are pushed into a fully associative structure called victim buffer. If this structure gets full, then an entry is selected from entries inside the victim buffer for the recall.
Claims1
A system with cache coherence, the system comprising a victim buffer that includes:
- a push interface for output to address victim buffer directory entry storage structure;
- and
- a compress interface to compress around pointers if an entry gets removed from the victim buffer due to a victim buffer hit and an update request,
- wherein the victim buffer hit causes the system, during a recall-all maintenance operation, to initiate a write entry from the tag filter without a push entry to the victim buffer.
1 more element
Dependencies are inferred from the claim text.