Hypervisor Dynamic Pause Loop Exiting

The patent introduces a hypervisor as an intermediary layer between the hardware pause loop exiting feature and the virtual machine software. The hypervisor captures and handles pause instructions from virtual machine software that lacks the highest privilege level, effectively mediating access to the hardware feature. This allows software without special privilege levels to benefit from efficient pause loop exiting while maintaining the hardware security model.

The patent implements a software-based pause exiting mechanism in the hypervisor that replicates the functionality of hardware pause loop exiting. By copying the essential behavior of the hardware feature at the software level, the system enables pause exiting capability for virtual machine software that cannot directly access hardware features, thus extending accessibility while preserving the efficiency benefit.

The patent implements dynamic threshold adjustment for enabling and disabling pause exiting based on system conditions and elapsed time. The hypervisor monitors system state and adjusts the thresholds dynamically, allowing pause exiting to be enabled when beneficial for efficiency while disabling it when stability is prioritized. This dynamic approach resolves the contradiction by adapting the system behavior to current conditions rather than using fixed settings.

The patent changes the parameters (thresholds) for enabling and disabling pause exiting based on system state and elapsed time. By adjusting these parameters dynamically, the system can optimize virtual machine management efficiency when needed while maintaining resource allocation stability when required, thus resolving the contradiction between efficiency improvement and stability maintenance.