SMI是什麽？
CPU enters system management mode when it receives an SMI# interrupt which is sent from south brigdge (power management controller). When the controller checks the SMI source and corresponding SMI enable bit is set, the SMI interrupt will send to CPU. Then CPU will enter a special CPU mode which is the system management mode.
Below is an instruction that describes a task. Write a response that appropriately completes the request. ### Instruction: SMI是什麽？ ### Response: CPU enters system management mode when it receives an SMI# interrupt which is sent from south brigdge (power management controller). When the controller checks the SMI source and corresponding SMI enable bit is set, the SMI interrupt will send to CPU. Then CPU will enter a special CPU mode which is the system management mode. 