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Linux 内核是否包含一些机制来检测 SMP 实现中某些 CPU 的故障？例如，如果多核平台上的某些内核在禁用中断后由于无限循环而卡住或阻塞，或者如果某些内核由于某些硬件故障（过热等）而断电，其余的会系统会注意到这一点并对此做出反应吗？