> therefore cryptographic code would have to give hints to the processor to enable such countermeasures. Such a facility does not seem to exist yet, and this is

> therefore cryptographic code would have to give hints to the processor to enable such countermeasures. Such a facility does not seem to exist yet, and this is why this vulnerability is considered to be unfixable That is what I am describing. I am proposing that we need to implement these facilities in firmware/microcode.