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Differential D54946

arm64: Add MOPS implementation of pagezero()
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Authored by sarah.walker2_arm.com on Jan 29 2026, 6:25 PM.

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Details

Reviewers

andrew
manu

Commits

rGe40964f7123e: arm64: Add MOPS implementation of pagezero()
rG7d7295df9b13: arm64: Add MOPS implementation of pagezero()

Summary

Reimplement pagezero() as ifunc. As pagezero() is only used in pmap.c,
move ifunc to that file.

Sponsored by: Arm Ltd

Diff Detail

Repository

rG FreeBSD src repository

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Build Status

Buildable 70543
Build 67426: arc lint + arc unit

Event Timeline

sarah.walker2_arm.com created this revision.Jan 29 2026, 6:25 PM

Herald added a reviewer: andrew. · View Herald TranscriptJan 29 2026, 6:25 PM

Herald added a reviewer: andrew. · View Herald Transcript

Herald added a reviewer: manu. · View Herald Transcript

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

sarah.walker2_arm.com requested review of this revision.Jan 29 2026, 6:25 PM

Harbormaster completed remote builds in B70213: Diff 170736.Jan 29 2026, 6:25 PM

sarah.walker2_arm.com added a child revision: D54947: arm64: Add MOPS implementations of copyin/copyout.Jan 29 2026, 6:26 PM

andrew added inline comments.Jan 30 2026, 11:02 AM

sys/arm64/arm64/pmap.c
10231–10238	These are needed by more than the ifunc so should be left in `machdep.c`
sys/arm64/arm64/support.S
406–408	We can use `xzr` directly rather than setting `x1` to 0.

Address review comments.

Harbormaster completed remote builds in B70230: Diff 170772.Jan 30 2026, 12:26 PM

andrew accepted this revision.Jan 30 2026, 1:20 PM

This revision is now accepted and ready to land.Jan 30 2026, 1:20 PM

Address review comments.

This revision now requires review to proceed.Feb 2 2026, 10:01 AM

Harbormaster completed remote builds in B70339: Diff 170973.Feb 2 2026, 10:01 AM

andrew accepted this revision.Feb 3 2026, 1:49 PM

This revision is now accepted and ready to land.Feb 3 2026, 1:49 PM

Remove mops_supported.

This revision now requires review to proceed.Feb 9 2026, 11:52 AM

Harbormaster completed remote builds in B70543: Diff 171509.Feb 9 2026, 11:52 AM

andrew accepted this revision.Feb 9 2026, 5:31 PM

This revision is now accepted and ready to land.Feb 9 2026, 5:31 PM

Closed by commit rG7d7295df9b13: arm64: Add MOPS implementation of pagezero() (authored by sarah.walker2_arm.com, committed by andrew). · Explain WhyFeb 10 2026, 3:43 PM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG7d7295df9b13: arm64: Add MOPS implementation of pagezero().

andrew added a commit: rGe40964f7123e: arm64: Add MOPS implementation of pagezero().Wed, Apr 8, 2:02 PM

Revision Contents
Changeset List

Path

Size

sys/

arm64/

arm64/

10 lines

22 lines

12 lines

include/

1 line

Diff 171509

sys/arm64/arm64/machdep.c

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sys/arm64/arm64/pmap.c

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sys/arm64/arm64/support.S

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sys/arm64/include/machdep.h

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