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Differential D55955

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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F173973380: D55955.id173925.diff
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Reviewers
manu
Group Reviewers
arm64
Commits
rG7bb6b62394d3: arm64: mte: copy/save tags on copy-on-write
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
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Lint Skipped
Unit
Tests Skipped
Build Status
Buildable 71536
Build 68419: arc lint + arc unit

Revision Contents
Changeset List

PathSize
sys/
arm64/
arm64/
41 lines
13 lines
include/
1 line

Diff 173925

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sys/arm64/arm64/mte.c

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sys/arm64/arm64/pmap.c

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sys/arm64/include/cpu.h

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