During exception processing, we are not supposed to fault immediately after re-enabling the FPU (unless exception handling code is suffering from bugs, of course).
During exception processing, we are not supposed to fault immediately
after re-enabling the FPU (unless exception handling code is suffering
from bugs, of course).

Should this happen, invoke the error fault handler, but at least clear
the exception state first, so that it gets a chance to run.

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