So, in summary:

 * I can try some MMX and catch SIGILL if non-MMX CPU. Works (?), but
   is ugly and clumsy.

 * I can use CPUID, but I guess then I should be prepared to catch
   SIGILL on old CPUs so I don't gain much from the above.

 * I could look in dmesg, but this is really ugly since this is a
   ring-buffer, and the particular boot-up message is not guaranteed
   to be in the buffer at all.

 * There _should_ be some sysctl for this. Can someone please do this?
   Or point me to how I'd go about doing it myself?

-- 
Frode Vatvedt Fjeld


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