Electrical computers and digital data processing systems: input/ – Access locking
Reexamination Certificate
2006-11-21
2006-11-21
Dang, Khanh (Department: 2111)
Electrical computers and digital data processing systems: input/
Access locking
C710S240000
Reexamination Certificate
active
07139855
ABSTRACT:
A method, apparatus, system, and signal-bearing medium that in an embodiment set a resource indicator to indicate that a processor is using a resource in a logically-partitioned electronic device, determine whether a current partition in the logically-partitioned electronic device owns the resource, and clear the resource indicator after the processor is done using the resource. When a partition gives up ownership of a resource, a resource ownership state is changed to indicate that the partition does not own a resource, and the partition waits to continue executing until other processors have cleared their respective resource indicators. In an embodiment, the resource indicator is in a cache line that is local to the processor, which allows resources to be dynamically allocated with improved performance.
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Definition of “cache memory” by SearStorage.com.
William J. Armstrong, et al, U.S. Appl. No. 10/400,702 (ROC920030107US1), filed Mar. 27, 2003.
Armstrong William Joseph
Nayar Naresh
Dang Khanh
Gamon Owen J.
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