Page MenuHomeFreeBSD
Differential D32339

Only demote when needed in the arm64 pmap_change_props_locked
ClosedPublic
Actions

Authored by andrew on Oct 6 2021, 4:46 PM.
Tags
None
Referenced Files
Unknown Object (File)
Mon, Apr 6, 4:01 PM
Unknown Object (File)
Thu, Mar 26, 5:03 AM
Unknown Object (File)
Sun, Mar 22, 6:33 AM
Unknown Object (File)
Sun, Mar 22, 2:30 AM
Unknown Object (File)
Sun, Mar 22, 12:35 AM
Unknown Object (File)
Sun, Mar 22, 12:35 AM
Unknown Object (File)
Sun, Mar 22, 12:35 AM
Unknown Object (File)
Feb 8 2026, 2:24 AM
View All Files
Subscribers
emaste
imp

Details

Reviewers
alc
kib
markj
manu
Group Reviewers
arm64
Commits
rG39dbb494404f: Only demote when needed in the arm64 pmap_change_props_locked
rG806a88e74200: Only demote when needed in the arm64 pmap_change_props_locked
Summary

When changing page table properties there is no need to demote a
level 1 or level 2 block if we are changing the entire memory range the
block is mapping. In this case just change the block directly.

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable

Event Timeline

andrew created this revision.Oct 6 2021, 4:46 PM
Herald added a reviewer: manu. · View Herald TranscriptOct 6 2021, 4:46 PM
Herald added subscribers: emaste, imp. · View Herald Transcript
andrew requested review of this revision.Oct 6 2021, 4:46 PM
Harbormaster completed remote builds in B41986: Diff 96352.Oct 6 2021, 4:47 PM
alc added inline comments.Oct 7 2021, 7:47 AM
sys/arm64/arm64/pmap.c
6115

L3_SIZE -> pte_size?

andrew updated this revision to Diff 96405.Oct 7 2021, 10:20 AM

Fix the size in cpu_dcache_wbinv_range

Harbormaster completed remote builds in B42000: Diff 96405.Oct 7 2021, 10:20 AM
markj accepted this revision.Oct 7 2021, 4:09 PM
markj added inline comments.
sys/arm64/arm64/pmap.c
6072–6073

We should have an explicit /* FALLTHROUGH */ annotation here and below.

This revision is now accepted and ready to land.Oct 7 2021, 4:09 PM
alc accepted this revision.Oct 8 2021, 6:51 AM
kib accepted this revision.Oct 8 2021, 10:31 AM
Closed by commit rG806a88e74200: Only demote when needed in the arm64 pmap_change_props_locked (authored by andrew). · Explain WhyOct 11 2021, 10:44 AM
This revision was automatically updated to reflect the committed changes.
andrew added a commit: rG806a88e74200: Only demote when needed in the arm64 pmap_change_props_locked.
andrew added a commit: rG39dbb494404f: Only demote when needed in the arm64 pmap_change_props_locked.Oct 25 2021, 1:55 PM

Revision Contents
Changeset List

PathSize
sys/
arm64/
arm64/
76 lines

Diff 96659

View Options

sys/arm64/arm64/pmap.c

Loading...