On 07/30/2014 10:25 AM, Andy Lutomirski wrote: > > And yet x86_64 has this code implemented in assembly even in the > slowpath. Go figure. > There is way too much assembly in entry_64.S probably because things have been grafted on, ahem, "organically". It is darn nigh impossible to even remotely figure out what goes on in that file. -hpa