[Bug 264775] [PATCH] acpi_thermal: passive cooling only throttles cpu0

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264775

--- Comment #10 from crahman@gmail.com ---
I didn't have time to address this last year, but the problem described in the
comments of this bug is related to a failure of the save/restore mechanism of
the cpu frequency.  I've described in in more detail in differential D35704. 
In short, the cpu frequency is saved and restored as thermal control is
activated and deactivated.  But the restore mechanism breaks and so one ends up
with a low cpu frequency until a reboot.

It would be very useful to finally fix this bug.

Instead of maintaining this patch in multiple places, the latest revision is at
https://reviews.freebsd.org/D35704 along with code to allow active/passive
cooling to be controlled by power_profile.

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