Cache allocation mechanism for saving elected unworthy...

Details Cache allocation mechanism for saving elected unworthy... Cache allocation mechanism for saving elected unworthy...

2006-01-31

2006-01-31

Verbrugge, Kevin (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S136000

Reexamination Certificate

active

06993628

ABSTRACT:
A method and apparatus in a data processing system for protecting against a displacement of one type of cache line using a least recently used cache management process. A first member in a class of cache lines is selected as a substitute victim. The substitute victim is unselectable by the least-recently-used cache management process, and the substitute victim is associated with a second member in the class of cache lines. The substitute victim is replaced in response to a selection of the second member as a victim in response to a cache miss in the data processing system, wherein the second member remains in the class of cache lines.

REFERENCES:
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patent: 6145057 (2000-11-01), Arimilli et al.
patent: 6345339 (2002-02-01), Arimilli et al.
patent: 6408362 (2002-06-01), Arimilli et al.
patent: 2004/0073760 (2004-04-01), Arimilli et al.
Cargnoni et al., Cache Allocation Mechanism for Saving Multiple Elected Unworthy Members via Substitute Victimization and Imputed Worthiness of Multiple Substitute Victim Members.
Arimilli et al., Programming Means for Dynamic Specification of Cache Management Preferences.
Cargnoni et al., Cache Allocation Mechanism for Biasing Subsequent Allocations Based Upon Cache Directory State.

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