Locking/Unlocking CPUs to Operate in Safety Mode or Performance Mode Without Rebooting

摘要

An embodiment of the invention provides a method for changing a multi-processor system from a performance mode to a safety mode while the system continues to run software. When an external event or exception occurs, context is switched from the performance mode to the safety mode. After context is switched, at least one pair of CPUs is synchronized to operate in the safety mode. In addition, a multi-processor system may be switched form the safety mode to the performance mode while the software continues to operate.

主权项

1. A method of changing from a safety mode to a performance mode in a multi-processor system comprising:
detecting an external event; switching context; unlocking at least one pair of CPUs; wherein software continues to operate on the multi-processor system.