b72d6ac274
Expected NMI-s are those than are either generated by the software (such as a CPU sending NMI to other CPU) or generated by the hardware after the software configured it to do so (such as NMI-s on PMC events). Some unexpected NMI-s can be caused by hardware failures and it is possible to inquire the hardware about them (somewhat like MCA but much more primitive) using an EISA mechanism. In some cases the origin of the NMI can remain truly unknown. This commit should not change any functionality. It just reorganizes the code, so that it is easier to extend with new checks for the origin of the NMI. Also, it frees the code that has nothing to do with ISA from DEV_ISA. MFC after: 3 weeks
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