2 ms·

That works, sort of, but how do you even ensure the hardware is actually working? Trust Intel or ARM after what they've shown? And trying to fully bypass cache

• monocasa 7y ago
  > That works, sort of, but how do you even ensure the hardware is actually working? Trust Intel or ARM after what they've shown? Which part are you referring to? > And trying to fully bypass cache and speculation when doing userspace to/from kernel transfers is going to suck. Remapping pages also. Here's a demonstration of doing it remotely, with specially crafted network packets. https://arxiv.org/abs/1807.10535 https://arxiv.org/abs/1807.10535 It's not as hard as you're making it seem, the root here is that hardware is currently broken. > And if MMU is untrustworthy, well... If the MMU is untrustworthy, it doesn't matter if you allow a cross domain VM or not.