3 ms·
Hardware hasn't historically been seen as a security boundary. A buggy driver has always been able to take over your computer and crash it by fiddling with the
by diegocg 6y ago
Hardware hasn't historically been seen as a security boundary. A buggy driver has always been able to take over your computer and crash it by fiddling with the hardware.
- monocasa 6y agoRight, but the question is what are these extra memcpys getting you then other than using up your CPU just to bounce bytes around? And the answer is that there exists hardware today that can help restrict DMA access to main RAM, but take the form of base+bounds primitives rather than a full MMU. This appears to be in support of that.