If it cannot be resolved by the VMM, or if the page fault occurs when interrupts are disabled, the system will crash.
如果不能够通过VMM解决，或者在禁用中断的情况下发生页面错误，那么将造成系统崩溃。
An instruction storage interrupt is a page fault on an instruction fetch.
指令存储中断通常是指在取出指令时发生页面错误。
Only when a page fault is hit, for example, because the accessed page has been swapped out to disk, does the PPE receive an interrupt.
例如，只有在由于所访问的页面已经被交换到磁盘上而发生页面失效的情况时，PPE 才会接收到一个中断。
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