Processor Core Segmentation for Management Interrupt Handling
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Solution Overview
Problem
In multi-processor computing devices, existing systems lack efficient mechanisms to handle management interrupts, such as system management interrupts (SMIs) and platform management interrupts (PMIs), which can lead to processor core overload and reduced redundancy and fault tolerance, as these interrupts typically require all processor cores to transition into system management mode synchronously.
Innovation Solution
A method where a subset of processor cores is sequestered to form a management interrupt handling process group, using algorithms like virtual synchrony or Paxos to elect and maintain these cores, allowing for redundant and fault-tolerant handling of management interrupts, while non-sequestered cores continue executing the operating system, and enabling directed interrupt handling to prevent core overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all processor cores transition into system management mode synchronously to handle management interrupts, then system management functions can be handled, but processor core overload occurs and redundancy and fault tolerance are reduced
Solution Approach 1:
The patent segments the processor cores into two distinct groups: a first group of processor cores that handle management interrupts by transitioning into system management mode, and a second group of processor cores that continue executing the operating system. This segmentation allows management interrupt handling to be distributed to specific cores rather than requiring all cores to transition, thereby maintaining redundancy and fault tolerance while preventing processor core overload.
2Reliability
If a subset of processor cores is sequestered to handle management interrupts, then redundancy and fault tolerance are enhanced, but system complexity increases
Solution Approach 1:
The patent implements dynamic core group formation where the first and second groups of processor cores are formed based on runtime conditions rather than fixed hardware assignments. The system can dynamically determine which cores handle management interrupts versus execute the operating system, allowing flexibility in resource allocation while maintaining enhanced reliability through the sequestered subset approach.
Data Source
AI summary
A method and system for handling a management interrupt, such as a system management interrupt (SMI) and/or a platform management interrupt (PMI), includes allocating two or more processor cores from a plurality of processor cores to form a group of management interrupt handling processor cores. Generated management interrupts are directed to this first group of processor cores and not to remaining processor cores, which form a second group. At least one of the processor cores in the first group handles the management interrupt without disrupting the current operation of the processor cores in the second group.