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arm64: mte: copy/save tags on copy-on-write
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Authored by andrew on Mar 19 2026, 4:06 PM.
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Details

Reviewers
manu
Group Reviewers
arm64
Summary

On a copy-on-write, copy the memory tags from the source pages to the
destination pages so the forked process can continue to use MTE.

Sponsored by: Arm Ltd
Signed-off-by: Harry Moulton <harry.moulton@arm.com>

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 71536
Build 68419: arc lint + arc unit