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Differential D52357

arm64: Add a sysctl to see if features are enabled
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Authored by andrew on Sep 3 2025, 12:21 PM.
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emaste
imp

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Reviewers
manu
imp
Group Reviewers
arm64
Commits
rGddc20379099b: arm64: Add a sysctl to see if features are enabled
rG9204a315a71c: arm64: Add a sysctl to see if features are enabled
Summary

This will also be used as a tunable to control features in a later
change.

Sponsored by: Arm Ltd

Diff Detail

Repository
rG FreeBSD src repository
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Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

andrew created this revision.Sep 3 2025, 12:21 PM
Herald added a reviewer: manu. · View Herald TranscriptSep 3 2025, 12:21 PM
Herald added subscribers: emaste, imp. · View Herald Transcript
andrew requested review of this revision.Sep 3 2025, 12:21 PM
Harbormaster completed remote builds in B66778: Diff 161420.Sep 3 2025, 12:21 PM
andrew added a parent revision: D52356: arm64: Add a macro to create cpu_feat.Sep 3 2025, 12:21 PM
andrew added a child revision: D52358: arm64: Support managing features from loader.
imp accepted this revision.Sep 3 2025, 3:25 PM
imp added inline comments.
sys/arm64/include/cpu_feat.h
72

Any reason descr isn't retained somewhere?

This revision is now accepted and ready to land.Sep 3 2025, 3:25 PM
andrew added inline comments.Sep 4 2025, 3:38 PM
sys/arm64/include/cpu_feat.h
72

I previously had it in struct cpu_feat, but didn't have a need for it other than in the sysctl below.

Closed by commit rG9204a315a71c: arm64: Add a sysctl to see if features are enabled (authored by andrew). · Explain WhySep 4 2025, 4:47 PM
This revision was automatically updated to reflect the committed changes.
andrew added a commit: rG9204a315a71c: arm64: Add a sysctl to see if features are enabled.
andrew added a commit: rGddc20379099b: arm64: Add a sysctl to see if features are enabled.Jan 15 2026, 2:51 PM

Revision Contents
Changeset List

PathSize
sys/
arm/
arm/
5 lines
arm64/
arm64/
7 lines
6 lines
6 lines
8 lines
6 lines
include/
13 lines

Diff 161525

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sys/arm/arm/generic_timer.c

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sys/arm64/arm64/cpu_feat.c

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sys/arm64/arm64/identcpu.c

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sys/arm64/arm64/machdep.c

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sys/arm64/arm64/pmap.c

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sys/arm64/arm64/ptrauth.c

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sys/arm64/include/cpu_feat.h

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