Ring negative-2, not ring 2. It represents SMM (-2) under the hypervisor (-1) under root (0). Although OS/2 and eComstation use ring 2 a lot which made them ha

Ring negative-2, not ring 2. It represents SMM (-2) under the hypervisor (-1) under root (0). Although OS/2 and eComstation use ring 2 a lot which made them hard to emulate for a while.