arm64: Add a function to check a range of CPU revs
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Authored by andrew on Aug 27 2025, 5:02 PM.

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Reviewers

manu

Group Reviewers

arm64

Commits

rGc76b0247a95e: arm64: Add a function to check a range of CPU revs

Summary

Add a function that can check if a given midr is within a range of
revisions. This will be used to check if a CPU is affected by a known
erratum.

Diff Detail

Repository

rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

andrew created this revision.Aug 27 2025, 5:02 PM

Herald added a reviewer: manu. · View Herald TranscriptAug 27 2025, 5:02 PM

Herald added subscribers: emaste, imp. · View Herald Transcript

Harbormaster completed remote builds in B66570: Diff 161051.Aug 27 2025, 5:02 PM

andrew requested review of this revision.Aug 27 2025, 5:02 PM

andrew added a parent revision: D52186: arm64: Cleanup enabling the MMU.

andrew added a child revision: D52188: arm64: Clean up HW DBM errata detection.

emaste added inline comments.Aug 27 2025, 5:07 PM

sys/arm64/include/cpu.h
199	This guard seems a little surprising to me

andrew added inline comments.Aug 27 2025, 6:02 PM

sys/arm64/include/cpu.h
199	It should be `#if !defined(__ASSEMBLER__)`. It's needed because we include this file in `locore.S` for `CPU_AFF_MASK` (and possibly others)

This revision was not accepted when it landed; it landed in state Needs Review.Sep 4 2025, 4:47 PM

Closed by commit rGc76b0247a95e: arm64: Add a function to check a range of CPU revs (authored by andrew). · Explain Why

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rGc76b0247a95e: arm64: Add a function to check a range of CPU revs.

Revision Contents
Changeset List

Path

Size

sys/

arm64/

include/

cpu.h

25 lines

Diff 161527

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arm64: Add a function to check a range of CPU revsClosedPublicActions