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acpi_perf: Mark readonly when using FFH
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Authored by aokblast on Feb 25 2026, 10:44 AM.

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Subscribers

imp

Details

Reviewers

olce

Summary

FFH in x86 means reading MSR. We already have the specific driver
hwpstate_{intel,amd} to handle all stuffs. Therefore, mark acpi_perf as
readonly in here.

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Repository

rG FreeBSD src repository

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Lint Passed

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No Test Coverage

Build Status

Buildable 74244
Build 71127: arc lint + arc unit

Event Timeline

aokblast created this revision.Feb 25 2026, 10:44 AM

Herald added a subscriber: imp. · View Herald TranscriptFeb 25 2026, 10:44 AM

aokblast requested review of this revision.Feb 25 2026, 10:44 AM

Harbormaster completed remote builds in B70988: Diff 172666.Feb 25 2026, 10:44 AM

aokblast added a reviewer: olce.Feb 25 2026, 10:45 AM

aokblast added a parent revision: D55475: acpi: Support Functional Fixed Hardware.

aokblast added a child revision: D57825: hwpstate_amd: Detect ACPI _CPC object to enable CPPC.Jun 24 2026, 6:25 PM

Minor fixes

Harbormaster completed remote builds in B74244: Diff 180617.Jun 25 2026, 1:21 PM

Disappearance of SYS_RES_FFH (see other revisions in the stack) makes this obsolete.

This revision now requires changes to proceed.Jul 10 2026, 5:03 PM

aokblast abandoned this revision.Jul 12 2026, 5:19 AM

Revision Contents
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Path

Size

sys/

dev/

acpica/

acpi_perf.c

39 lines

Diff 180617

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sys/dev/acpica/acpi_perf.c

acpi_perf: Mark readonly when using FFHAbandonedPublicActions