interrupt mask

基本解释

Before you raise the interrupt in the kernel thread, you will have to set the bit/mask values on these local registers.
在内核线程中触发中断之前，还需要设置这些本地寄存器中的位/掩码的值。
Basically, a feature of the CPU that permits the machine to mask an interrupt request until the following instruction has been completed.
中央处理机的一种基本特性，在下一条指令执行完毕前允许屏蔽中断请求。