Remove unneeded masks from the arm64 KASAN shadow
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Authored by andrew on Apr 21 2023, 3:55 PM.

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emaste

imp

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kevans
manu

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arm64

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rG1bf4991bbc2c: Remove unneeded masks from the arm64 KASAN shadow

Summary

When mapping the arm64 KASAN shadow map we use Ln_TABLE_MASK to align
physical addresses, however these should already be aligned either
by rounding to a greater alignment, or the VM subsystem is giving us
a correctly aligned page.

Remove these extra alignment masks.

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Repository

rG FreeBSD src repository

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Event Timeline

andrew created this revision.Apr 21 2023, 3:55 PM

Herald added a reviewer: manu. · View Herald TranscriptApr 21 2023, 3:55 PM

Herald added subscribers: emaste, imp. · View Herald Transcript

andrew requested review of this revision.Apr 21 2023, 3:55 PM

Harbormaster completed remote builds in B51095: Diff 120817.Apr 21 2023, 3:55 PM

kevans accepted this revision as: kevans.Apr 21 2023, 4:03 PM

This revision is now accepted and ready to land.Apr 21 2023, 4:03 PM

Closed by commit rG1bf4991bbc2c: Remove unneeded masks from the arm64 KASAN shadow (authored by andrew). · Explain WhyApr 24 2023, 11:34 AM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG1bf4991bbc2c: Remove unneeded masks from the arm64 KASAN shadow.

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sys/

arm64/

pmap.c

6 lines

Diff 120920

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Remove unneeded masks from the arm64 KASAN shadowClosedPublicActions