arm64: Support pmap_fault with a locked pmap
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Authored by andrew on Sep 27 2024, 3:49 PM.

Details

Reviewers

kib
markj
manu

Group Reviewers

arm64

Commits

rG54f23b015aa6: arm64: Support pmap_fault with a locked pmap

Summary

When we get a data abort in an EFI runtime service the userspace pmap
will be locked by the current thread. Skip trying to lock it again as
it will be in a critical section and the lock may sleep.

Diff Detail

Repository

rG FreeBSD src repository

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Unit

Tests Skipped

Build Status

Buildable 59624
Build 56511: arc lint + arc unit

Event Timeline

andrew created this revision.Sep 27 2024, 3:49 PM

Herald added a reviewer: manu. · View Herald TranscriptSep 27 2024, 3:49 PM

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

andrew requested review of this revision.Sep 27 2024, 3:49 PM

Harbormaster completed remote builds in B59624: Diff 143808.Sep 27 2024, 3:49 PM

andrew added a child revision: D46814: arm64: Stop setting x0 for pcb_onfault handlers.Sep 27 2024, 3:49 PM

markj accepted this revision.Oct 1 2024, 7:51 AM

This revision is now accepted and ready to land.Oct 1 2024, 7:51 AM

Closed by commit rG54f23b015aa6: arm64: Support pmap_fault with a locked pmap (authored by andrew). · Explain WhyOct 15 2024, 5:30 PM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG54f23b015aa6: arm64: Support pmap_fault with a locked pmap.

Revision Contents
Changeset List

Path

Size

sys/

arm64/

pmap.c

15 lines

Diff 143808

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arm64: Support pmap_fault with a locked pmapClosedPublicActions