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arm: Fix handling of undefined instructions in kernel mode
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Authored by markj on Dec 8 2023, 6:03 PM.
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Details

Summary

Only panic if no undefined instruction handler matched the exception.
This can arise in practice if the VFP is enabled lazily.

Obtained from: Stormshield
Sponsored by: Klara, Inc.
Sponsored by: Stormshield

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rG FreeBSD src repository
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markj requested review of this revision.Dec 8 2023, 6:03 PM

undefinedinstruction needs some clean ups, e.g. lets hope we don't have a misaligned PC from the kernel or that fault_pc doesn't fault, but they are outside the scope of this change.

This revision is now accepted and ready to land.Dec 11 2023, 11:07 AM