how to communicate an exit code from the guest to the host on arm64 / aarch64 (equivalent to isa-debug-exit)

Asked by Gary Miguel

Hi,
I've found I can have the guest write to the port specified by |isa-debug-exit|, and the value written to the port gets used as the exit code of QEMU (after some predictable transformation).
Is there an equivalent mechanism for aarch64 / arm64?

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