On 06/07/2018 05:59 PM, Andy Lutomirski wrote: > Can you ask the architecture folks to clarify the situation? And, if > your notes are indeed correct, don't we need code to handle spurious > faults? I'll double check that I didn't misunderstand the situation and that it has not changed on processors with shadow stacks. But, as far as spurious faults, wouldn't it just be a fault because we've transiently gone to Present=0? We already do that when clearing the Dirty bit, so I'm not sure that's new. We surely already handle that one.
