On Fri, Jul 21, 2017 at 01:39:13PM +0200, Oliver Mangold wrote: > Better, but obviously there is still much room for improvement by reducing > the number of calls to RDRAND. Hmm, is there some way we can easily tell we are running on Ryzen? Or do we believe this is going to be true for all AMD devices? I guess we could add some kind of "has_crappy_arch_get_random()" call which could be defined by arch/x86, and change how aggressively we use arch_get_random_*() depending on whether has_crappy_arch_get_random() returns true or not.... - Ted
