Jérôme Duval dfed08e0de intel_pstates: enable HWP when available
* don't reset the APERF and MPERF MSRs, they could be in use otherwise.
* use EPP or EPB to select power-save or performance mode
* HWP_REQUEST_PACKAGE disabled (as other OSes seem to do).

Change-Id: I26eb0b05c402b131a4ab174ad6f9ddf8e9367709
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3222
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>
2020-09-17 15:46:58 +00:00
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