Electrical computers and digital processing systems: memory – Storage accessing and control – Hierarchical memories
Reexamination Certificate
2006-03-16
2009-08-25
Bataille, Pierre-Michel (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Hierarchical memories
C711S118000, C711S152000, C711S154000, C711S156000
Reexamination Certificate
active
07581067
ABSTRACT:
A load when reservation lost instruction for performing cacheline polling is disclosed. Initially, a first process requests an action to be performed by a second process. The request is made via a store operation to a cacheable memory location. The first process then reads the cacheable memory location via a conditional load operation to determine whether or not the requested action has been completed by the second process, and the first process sets a reservation at the cacheable memory location if the requested action has not been completed by the second process. The conditional load operation of the first process is stalled until the reservation at the cacheable memory location has been lost. After the requested action has been completed, the reservation in the cacheable memory location is reset by the second process.
REFERENCES:
patent: 4380798 (1983-04-01), Shannon et al.
patent: 5611074 (1997-03-01), Kantz et al.
patent: 2003/0115476 (2003-06-01), McKee
Bataille Pierre-Michel
Dillon & Yudell LLP
Gu Shawn X
International Business Machines - Corporation
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