The decode tree is checking for MISCREG_IMPDEF_UNIMPL before the MISCREG_UNIMPLEMENTED flag Faulting is handled anyway by the new fault callbacks Change-Id: I600ac02913c2fd947c3a6b7f1f81111f21bff3f6 Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/61687 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-by: Richard Cooper <richard.cooper@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>