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Differential D34277

riscv: Maintain the allpmaps list only in SV39 mode
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Authored by markj on Feb 14 2022, 10:30 PM.
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rGceed61483ca9: riscv: Maintain the allpmaps list only in SV39 mode
Summary

When four-level page tables are used, there is no need to distribute
updates to the top-level page to all pmaps.

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rG FreeBSD src repository
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Event Timeline

markj created this revision.Feb 14 2022, 10:30 PM
Herald added a subscriber: imp. · View Herald TranscriptFeb 14 2022, 10:30 PM
markj requested review of this revision.Feb 14 2022, 10:30 PM
Harbormaster completed remote builds in B44446: Diff 102763.Feb 14 2022, 10:30 PM
markj added a parent revision: D34276: riscv: Add pmap helper functions required by four-level page tables.Feb 14 2022, 10:31 PM
markj added a child revision: D34278: riscv: Handle four-level page tables in various pmap traversal routines.
jhb added a subscriber: jhb.Feb 15 2022, 12:13 AM
jhb added inline comments.
sys/riscv/riscv/pmap.c
1307

Maybe just leave this outside of the if-else?

markj added inline comments.Feb 15 2022, 2:29 PM
sys/riscv/riscv/pmap.c
1307

It looks slightly odd since I haven't rebased on D34267. Once that's done the redundancy will be gone.

markj updated this revision to Diff 102798.Feb 15 2022, 3:10 PM

Rebase

Harbormaster completed remote builds in B44464: Diff 102798.Feb 15 2022, 3:10 PM
jhb accepted this revision.Feb 15 2022, 5:40 PM
This revision is now accepted and ready to land.Feb 15 2022, 5:40 PM
markj updated this revision to Diff 102933.Feb 18 2022, 2:26 PM

Copy only a single L0 entry in pmap_pinit().

This revision now requires review to proceed.Feb 18 2022, 2:26 PM
Harbormaster completed remote builds in B44498: Diff 102933.Feb 18 2022, 2:26 PM
markj updated this revision to Diff 102935.Feb 18 2022, 2:28 PM

Rebase.

Harbormaster completed remote builds in B44500: Diff 102935.Feb 18 2022, 2:28 PM
This revision was not accepted when it landed; it landed in state Needs Review.Mar 1 2022, 2:40 PM
Closed by commit rGceed61483ca9: riscv: Maintain the allpmaps list only in SV39 mode (authored by markj). · Explain Why
This revision was automatically updated to reflect the committed changes.
markj added a commit: rGceed61483ca9: riscv: Maintain the allpmaps list only in SV39 mode.

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sys/
riscv/
riscv/
48 lines

Diff 103335

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sys/riscv/riscv/pmap.c

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