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arm64/vmm: Add breakpoint and single-stepping support
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Authored by markj on Apr 10 2024, 4:07 PM.
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Summary

This will be used to implement parts of bhyve's gdb stub.

Sponsored by: Innovate UK

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rG FreeBSD src repository
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Event Timeline

  • Use a bitmask to record which capabilities are enabled. This is closer to what amd64 does.
  • Disable hardware interrupts when enabling single-stepping. Otherwise we take a timer interrupt before single-stepping the target and don't make progress.
This revision is now accepted and ready to land.May 25 2024, 9:48 PM