Interrupt Controller Domains for Low-Latency Reassignment

The patent merges multiple individual interrupt configuration operations into a single batch operation. The interrupt controller is modified to accept and process multiple interrupt destination updates simultaneously, rather than handling each interrupt individually. This combining of operations reduces the total number of programming cycles required and eliminates the sequential overhead, thereby improving system performance while maintaining reconfiguration flexibility.

The patent segments the interrupt configuration process into distinct phases: a setup phase where multiple interrupt destinations are prepared for reconfiguration, and an execution phase where all changes are applied atomically in a single batch operation. This segmentation allows the system to prepare changes without immediately applying them, reducing interference with ongoing interrupt handling and minimizing performance impact.

The patent implements preliminary action by allowing the system to prepare multiple interrupt destination changes in advance during a setup phase, without immediately applying them. The changes are staged and validated before execution, so when reconfiguration is needed, the actual application occurs rapidly in a single batch operation. This preliminary preparation reduces the critical path latency of frequent reconfiguration operations.

The patent enables periodic batch reconfiguration where interrupt destinations are updated in structured intervals rather than continuously individually. The system can accumulate multiple destination changes and apply them periodically in unified batch operations, reducing the frequency of interruptible configuration sequences and minimizing overall reconfiguration latency while maintaining adaptability to changing use cases.