Invention Grant
- Patent Title: Silent invalid state transition handling in an SMP environment
- Patent Title (中): SMP环境中的静默无效状态转换处理
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Application No.: US11425011Application Date: 2006-06-19
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Publication No.: US08812793B2Publication Date: 2014-08-19
- Inventor: Marcus L. Kornegay , Ngan N. Pham , Brian T. Vanderpool
- Applicant: Marcus L. Kornegay , Ngan N. Pham , Brian T. Vanderpool
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: CRGO Law
- Agent Steven M. Greenberg, Esq.
- Main IPC: G06F12/12
- IPC: G06F12/12

Abstract:
Embodiments of the invention address deficiencies of the art in respect to cache coherency management and provide a novel and non-obvious method, system and apparatus for silent invalid state transition handling in an SMP environment. In one embodiment of the invention, a cache coherency method can be provided. The cache coherency method can include identifying an invalid state transition for a cache line in a local node, evicting a corresponding cache directory entry for the cache line, forwarding an invalid state transition notification to a node controller for a home node for the cache line in order for the home node to evict a corresponding cache directory entry for the cache line, and relinquishing ownership of the cache line to the home node.
Public/Granted literature
- US20070294484A1 SILENT INVALID STATE TRANSITION HANDLING IN AN SMP ENVIRONMENT Public/Granted day:2007-12-20
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