Cache coherency for multiple independent cache of a domain

Details Cache coherency for multiple independent cache of a domain Cache coherency for multiple independent cache of a domain

2007-08-28

2007-08-28

McLean-Mayo, Kimberly (Department: 2187)

Electrical computers and digital processing systems: memory

Storage accessing and control

Hierarchical memories

C711S141000, C711S144000

Reexamination Certificate

active

10779839

ABSTRACT:
Distinguishing between snoops initiated internally with respect to a processing unit and snoops initiated externally with respect to a processing unit allows maintenance of cache coherency for a processing unit with multiple independent cache nits. A processing unit with multiple independent cache units, issues an externally initiated snoop to its cache units. Responses from the multiple independent cache units are the basis for a unified response provided to at least the initiator of the external snoop. An internally initiated snoop is communicated to the host system, and communicated to peer cache unit(s) within the processing unit.

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