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Differential D54947

arm64: Add MOPS implementations of copyin/copyout
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Authored by sarah.walker2_arm.com on Jan 29 2026, 6:25 PM.
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andrew
manu
Commits
rGb608ec429777: arm64: Add MOPS implementations of copyin/copyout
rG1224347817c4: arm64: Add MOPS implementations of copyin/copyout
Summary

Reimplement copyin() & copyout() as ifuncs.

Sponsored by: Arm Ltd

Diff Detail

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rG FreeBSD src repository
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Build Status
Buildable 70231
Build 67114: 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
sarah.walker2_arm.com added a parent revision: D54946: arm64: Add MOPS implementation of pagezero().
Harbormaster completed remote builds in B70214: Diff 170737.Jan 29 2026, 6:26 PM
andrew added inline comments.Jan 30 2026, 11:18 AM
sys/arm64/arm64/copyinout.S
90

You can use cpyf*rt and cpyf*wt directly to implement copyin & copyout.

As they execute the load/store as unprivileged operations you will need to set the fault handler, but don't need to enable user access.

sarah.walker2_arm.com updated this revision to Diff 170773.Jan 30 2026, 12:27 PM

Address review comments.

Harbormaster completed remote builds in B70231: Diff 170773.Jan 30 2026, 12:27 PM
andrew accepted this revision.Jan 30 2026, 1:23 PM
This revision is now accepted and ready to land.Jan 30 2026, 1:23 PM
sarah.walker2_arm.com updated this revision to Diff 170974.Feb 2 2026, 10:01 AM

Address review comments.

This revision now requires review to proceed.Feb 2 2026, 10:01 AM
Harbormaster completed remote builds in B70340: Diff 170974.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
sarah.walker2_arm.com updated this revision to Diff 171510.Feb 9 2026, 11:52 AM

Remove mops_supported.

This revision now requires review to proceed.Feb 9 2026, 11:52 AM
Harbormaster completed remote builds in B70544: Diff 171510.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 rG1224347817c4: arm64: Add MOPS implementations of copyin/copyout (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: rG1224347817c4: arm64: Add MOPS implementations of copyin/copyout.
andrew added a commit: rGb608ec429777: arm64: Add MOPS implementations of copyin/copyout.Apr 8 2026, 2:02 PM

Revision Contents
Changeset List

PathSize
sys/
arm64/
arm64/
58 lines
48 lines
conf/
1 line

Diff 170773

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sys/arm64/arm64/copyinout.S

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sys/arm64/arm64/copyinout_ifunc.c

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sys/conf/files.arm64

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