arm/gic: Detect broken configurations
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Authored by andrew on Jan 23 2026, 12:10 PM.

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ARM
arm64

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rGbcb8b267f323: arm/gic: Detect broken configurations
rG6c5fdba45a63: arm/gic: Detect broken configurations

Summary

Some virtualization platforms provide broken configurations. There
is a GIC interrupt controller, however accessing the CPU interface
registers leads to an external data abort. As these are needed to
handle interrupts we are unable to boot further.

Detect this misconfiguration and panic to tell the user the issue.

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rG FreeBSD src repository

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Tests Not Applicable

Event Timeline

andrew created this revision.Jan 23 2026, 12:10 PM

Herald added a subscriber: imp. · View Herald TranscriptJan 23 2026, 12:10 PM

andrew requested review of this revision.Jan 23 2026, 12:10 PM

Harbormaster completed remote builds in B70069: Diff 170264.Jan 23 2026, 12:10 PM

emaste accepted this revision as: emaste.Jan 23 2026, 1:23 PM

emaste added a subscriber: emaste.

emaste added inline comments.

sys/arm/arm/gic.c
362	or "broken hypervisor or hardware configuration"?

This revision is now accepted and ready to land.Jan 23 2026, 1:23 PM

Closed by commit rG6c5fdba45a63: arm/gic: Detect broken configurations (authored by andrew). · Explain WhyJan 23 2026, 5:04 PM

This revision was automatically updated to reflect the committed changes.

andrew added a commit: rG6c5fdba45a63: arm/gic: Detect broken configurations.

andrew added a commit: rGbcb8b267f323: arm/gic: Detect broken configurations.Feb 9 2026, 4:34 PM

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sys/

arm/

gic.c

15 lines

Diff 170273

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arm/gic: Detect broken configurationsClosedPublicActions