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arm64 pmap: batch chunk removal in pmap_remove_pages
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Authored by andrew on Aug 23 2022, 10:15 AM.
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Details

Summary

As with amd64 batch chunk removal in pmap_remove_pages to move it out
of the pv list lock. This is one of the main contested locks when
running poudriere on a 160 core Ampere Altra server.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 47260
Build 44147: arc lint + arc unit

Event Timeline

sys/arm64/arm64/pmap.c
2755

Missing newline.

5419

Do pv chunks need to be freed under the pmap lock?

sys/arm64/arm64/pmap.c
5419

It's the same as amd64. If the comments in D21832 don't apply here I can move it.

sys/arm64/arm64/pmap.c
5419

No, don't move it. The same reason applies here.

This revision was not accepted when it landed; it landed in state Needs Review.Sep 27 2022, 3:15 PM
This revision was automatically updated to reflect the committed changes.