arm64: Add table attributes to the EFI maps
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Authored by andrew on Sep 26 2025, 11:46 AM.

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Reviewers

tuexen
manu

Group Reviewers

arm64

Commits

rG2554148bd85b: arm64: Add table attributes to the EFI maps

Summary

Use table attributes to also limit unprivileged access to the EFI
runtime mappings. This is mostly for parity with pmap as this is never
mapped while userspace could execute.

Diff Detail

Repository

rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

andrew created this revision.Sep 26 2025, 11:46 AM

Herald added a reviewer: manu. · View Herald TranscriptSep 26 2025, 11:46 AM

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

andrew requested review of this revision.Sep 26 2025, 11:46 AM

Harbormaster completed remote builds in B67350: Diff 162882.Sep 26 2025, 11:46 AM

andrew added a parent revision: D52750: arm64: Mark EFI memory as userspace non-executable.Sep 26 2025, 11:46 AM

I tested this patch in combination with D52750 and it resolves the issue. Thanks for the fix.

This revision is now accepted and ready to land.Sep 26 2025, 1:45 PM

Closed by commit rG2554148bd85b: arm64: Add table attributes to the EFI maps (authored by andrew). · Explain WhySep 26 2025, 3:13 PM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG2554148bd85b: arm64: Add table attributes to the EFI maps.

Revision Contents
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Path

Size

sys/

arm64/

efirt_machdep.c

9 lines

Diff 162883

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sys/arm64/arm64/efirt_machdep.c

arm64: Add table attributes to the EFI mapsClosedPublicActions