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Differential D41944

i386 pmap: catch up with amd64 superpage improvements
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Authored by alc on Sep 22 2023, 6:35 PM.
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Reviewers
kib
markj
Commits
rG902ed64fecbe: i386 pmap: Adapt recent amd64/arm64 superpage improvements
Summary

Merges: (in reverse chronological order)

pmap: don't recompute mpte during promotion

pmap: optimize MADV_WILLNEED on existing superpages

pmap: standardize promotion conditions between amd64 and arm64

amd64/arm64 pmap: Stop requiring the accessed bit for superpage promotion

amd64 pmap: Tidy up pmap_promote_pde() calls

Retire PMAP_INLINE. It's unused.

Test Plan

Completes a "buildworld" in a bhyve VM with 4 cores and 8 GB memory.

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rG FreeBSD src repository
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Event Timeline

alc requested review of this revision.Sep 22 2023, 6:35 PM
alc created this revision.
alc updated this revision to Diff 127666.Sep 23 2023, 7:25 AM
alc edited the summary of this revision. (Show Details)

Add:

pmap: optimize MADV_WILLNEED on existing superpages

alc updated this revision to Diff 127725.Sep 24 2023, 9:14 PM
alc edited the summary of this revision. (Show Details)
alc edited the test plan for this revision. (Show Details)

Add:

Retire PMAP_INLINE. It's unused.

kib accepted this revision.Sep 25 2023, 10:10 AM

Pity that this work appeared needed.

This revision is now accepted and ready to land.Sep 25 2023, 10:10 AM
Closed by commit rG902ed64fecbe: i386 pmap: Adapt recent amd64/arm64 superpage improvements (authored by alc). · Explain WhySep 26 2023, 5:42 PM
This revision was automatically updated to reflect the committed changes.
alc added a commit: rG902ed64fecbe: i386 pmap: Adapt recent amd64/arm64 superpage improvements.
Herald added a subscriber: imp. · View Herald TranscriptSep 26 2023, 5:42 PM

Revision Contents
Changeset List

PathSize
sys/
i386/
i386/
200 lines
include/
2 lines

Diff 127830

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sys/i386/i386/pmap.c

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sys/i386/include/pmap.h

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