On Tue, Aug 21, 2018 at 07:27:00 -0700, Richard Henderson wrote: (snip) > +++ b/accel/tcg/atomic_template.h (snip) > +#else > +/* Fallback definitions that must be optimized away, or error. */ > +Int128 __attribute__((error("unsupported atomic"))) > + atomic16_read(Int128 *ptr); > +Int128 __attribute__((error("unsupported atomic"))) > + atomic16_set(Int128 *ptr, Int128 val);
void return type. Other than that, Reviewed-by: Emilio G. Cota <c...@braap.org>