3 ms·
That is probably referring to System Management Mode (privilege level/ring -2) and Intel Management Engine (privilege level/ring -3). Two very terrible things.
by sedachv 5y ago
That is probably referring to System Management Mode (privilege level/ring -2) and Intel Management Engine (privilege level/ring -3). Two very terrible things.
- saagarjha 5y agoMore likely to be https://en.wikipedia.org/wiki/Shadow_stack https://en.wikipedia.org/wiki/Shadow_stack.
- sedachv 5y agoProbably not. Shadow stacks don't really have anything to do with privilege levels or interrupts. And Intel only started shipping CPUs with "Control-flow Enforcement Technology" (which has their implementation of shadow stacks, and other things) last year.