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Differential D18050

Summary:Add definitions for Intel Speed Shift
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Authored by bwidawsk on Nov 19 2018, 7:43 PM.
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kib
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rS340716: Add definitions for Intel Speed Shift
Summary

These definitions will be used by a driver to implement Hardware
P-States (autonomous control of HWP, via Intel Speed Shift technology).

This is split out from the original RFC patch D18028.

Test Plan

N/A

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Repository
rS FreeBSD src repository - subversion
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Event Timeline

bwidawsk created this revision.Nov 19 2018, 7:43 PM
Harbormaster completed remote builds in B20897: Diff 50612.Nov 19 2018, 7:43 PM
bwidawsk retitled this revision from Summary: Add definitions for Intel Speed Shift to Summary:Add definitions for Intel Speed Shift.Nov 19 2018, 7:43 PM
bwidawsk added a subscriber: scottph.
bwidawsk mentioned this in D18028: Add support for Intel Speed Shift.Nov 20 2018, 12:45 AM
kib accepted this revision.Nov 20 2018, 9:30 AM

I think it is useful to add the decoding of CPUID.6 info identcpu.c, since we start to rely on many bits from there.

sys/x86/include/specialreg.h
557 ↗(On Diff #50612)

PECI is not listed in SDM, BTW.

This revision is now accepted and ready to land.Nov 20 2018, 9:30 AM
emaste added a comment.Nov 20 2018, 5:04 PM

Mentor approved

bwidawsk marked an inline comment as done.Nov 21 2018, 12:09 AM
bwidawsk added inline comments.
sys/x86/include/specialreg.h
557 ↗(On Diff #50612)

Ha. Well, I don't think there is much point in keeping that definition then.

Closed by commit rS340716: Add definitions for Intel Speed Shift (authored by bwidawsk). · Explain WhyNov 21 2018, 12:22 AM
This revision was automatically updated to reflect the committed changes.
Herald added a subscriber: imp. · View Herald TranscriptNov 21 2018, 12:22 AM

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sys/
x86/
include/
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head/sys/x86/include/specialreg.h

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