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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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Details

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.

Sponsored by: Arm Ltd

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rG FreeBSD src repository
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Event Timeline

sys/arm64/include/cpu.h
199

This guard seems a little surprising to me

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
This revision was automatically updated to reflect the committed changes.