Error detection/correction and fault detection/recovery – Data processing system error or fault handling – Reliability and availability
Reexamination Certificate
2008-04-08
2008-04-08
McCarthy, Christopher (Department: 2113)
Error detection/correction and fault detection/recovery
Data processing system error or fault handling
Reliability and availability
C714S011000, C712S031000
Reexamination Certificate
active
07356733
ABSTRACT:
According to one embodiment, a method comprises system firmware instructing a system's operating system to idle a processor, and responsive to the instructing, the operating system idling the processor and returning control over the processor to the system firmware. According to one embodiment, a method comprises detecting loss of lockstep (LOL) for a processor module in a system, and responsive to the detecting LOL for the processor module, system firmware instructing an operating system to idle the processor module.
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Filed concurrently herewith, entitled “System and Method for Maintaining in a Multi-Processor System a Spare Processor That is in Lockstep for Use in Recovering From Loss of Lockstep for Another Processor”.
Filed concurrently herewith, entitled “System and Method for Establishing a Spare Processor for Recovering From Loss of Lockstep in a Boot Processor”.
Filed concurrently herewith, entitled “System and Method for Using Information Relating to a Detected Loss of Lockstep for Determining a Responsive Action”.
Filed concurrently herewith, entitled “System and Method for Providing Firmware Recoverable Lockstep Protection”.
Filed concurrently herewith, entitled “System and Method for Configuring Lockstep Mode of a Processor Module”.
Filed concurrently herewith, entitled “System and Method for Reestablishing Lockstep for a Processor Module for Which Loss of Lockstep is Detected”.
Filed concurrently herewith, entitled “System and Method for Reintroducing a Processor Module to an Operating System After Lockstep Recovery”.
Filed concurrently herewith, entitled “System and Method for Switching the Role of Boot Processor to a Spare Processor Responsive to Detection of Loss of Lockstep in a Boot Processor”.
Michaelis Scott L.
Myer Sylvia K.
Powers Richard D.
Rajkumari Anurupa
Hewlett--Packard Development Company, L.P.
McCarthy Christopher
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