On Fujitsu's SPARC64 CPUs, the data_access_error trap is synchronous, and AFSR will be 0.  Check SFSR too, before deciding there's no fault.
On Fujitsu's SPARC64 CPUs, the data_access_error trap is synchronous, and AFSR
will be 0.  Check SFSR too, before deciding there's no fault.

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars