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vm: Support swapping arm64 MTE tags
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Authored by andrew on Mar 19 2026, 4:06 PM.
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Details

Reviewers
manu
alc
kib
markj
Group Reviewers
arm64
Summary

When we swap out a page containing MTE tags we need to keep a copy of
them to be restored when the page is later restored. Add support to
allocate per-page tag storage that is used when a MTE tagged page is
moved to swap and populate this with the pages tags.

Sponsored by: Arm Ltd

Diff Detail

Repository
rG FreeBSD src repository
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Lint Skipped
Unit
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Build Status
Buildable 71538
Build 68421: arc lint + arc unit