Tuukka,
I've reproduced this negative on a 48 thread 2-socket Xeon during boot
(seen it only once, so far).

expected_us gets calculated to be -1, which is truthful, since the
next timer return value was about 500ns in the past
and our math truncates.  This, in turn, confuses the heck out of
menu's prediction of the next event to be
over 500 sec in the future.

I suspect more breakage is lurking, so I'll poke some more...

Len Brown, Intel Open Source Technology Center
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