[10-STABLE, 11-CURRENT] something wrong between cam and eventtimer or geom and eventtimer

[Adrian Chadd]

.. the main reason to use machdep.idle=hlt is that it is a different code path.

But to ensure you're always going via the hlt codepath, you _first_
have to disable mwait.

The idle code first decides whether to run mwait or <idle>, then if it
doesn't choose mwait, it chooses machdep.idle. That's why you first
have to disable idle_wait.



-adrian