Mechanisms and techniques operate in a computerized device to execute critical code without interference from interruptions. Critical code is registered for invocation of a critical execution manager in the event of an interruption to the critical code. The critical code is then executed until an interruption to the critical code occurs. After handling the interruption, a critical execution manager is invoked and the critical execution manager detects if an interference signal indicates a reset value. If the interference signal indicates the reset value, the critical execution manager performs a reset operation on the critical code to reset a current state of the critical code to allow execution of the critical code while avoiding interference from handling the interruption and returns to execution of the critical code using the current state of the critical code.