System and method for reintroducing a processor module to an...

Details System and method for reintroducing a processor module to an... System and method for reintroducing a processor module to an...

2004-10-25

2010-10-19

Bonzo, Bryce P (Department: 2113)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S010000, C714S012000

Reexamination Certificate

active

07818614

ABSTRACT:
According to one embodiment, a method comprises, responsive to detection of loss of lockstep (LOL) for a processor module in a system, setting status information stored to the system for the processor module to indicate that the processor module has an error. The method further comprises reestablishing lockstep for the processor module without shutting down the system's operating system, and updating the status information for the processor module to indicate that the processor module no longer has the error. The method further comprises causing the system's operating system to recognize that the processor module having its lockstep reestablished is available for processing.

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