Discard control metadata
TW202634443APending Publication Date: 2026-08-16ARM LTD
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Patent Information
- Application Number
- TW114149161
- Authority / Receiving Office
- TW · TW
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-01-10
- Filing Date
- 2025-12-15
- Publication Date
- 2026-08-16
Smart Images
Figure TWG2TA001073246_001 
Figure TWG2TA001073246_002 
Figure TWG2TA001073246_003
Abstract
Interconnect circuitry comprises: receiving interface circuitry configured to receive, from a metadata-transmitting caching agent, discard control metadata for a given cache line previously held in a private cache of the data-transmitting caching agent; and transmitting interface circuitry configured to transmit the discard control metadata for the given cache line to a metadata-receiving caching agent for caching in a private cache of the metadata-receiving caching agent. The discard control metadata indicating whether the given cache line is, or is eligible for becoming, a discardable cache line allowed to be discarded without data writeback even if the discardable cache line is dirty.
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