Non Maskable Interrupts. Non maskable interrupt sources are totally out of the operating system control and have the lowest latency. Such sources are not supported on all the architectures.

• 非掩码中断。非掩码中断完全是处于操作系统控制以外并且拥有最小的延迟时间。这种中断源并不是所有的平台都支持。