Seems odd that you didn't get it in previous versions ... ? But
running the NMI oops detection whilst stealing NMIs in order to
bootstrap the CPUs is probably a Bad Idea (tm).
> Does 0xFF broadcast cluster, broadcast low nybble work or is waking
> them a cluster at a time required? This thing is not swift to boot...
Well, you don't want to send an NMI to yourself (the BSP), I presume?
That would probably make it unhappy ;-) The NMIs have to be logically addressed, which precludes the allbutself thingy, IIRC. So you have
a choice of serialised unicast (which is probably quite fast enough)
or cluster at a time, being careful to exclude yourself when you do
the BSP's cluster.
But I think you'd be far better off just disabling the NMI oopser
until we've booted - the dual use is too much nefarious incest for
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