The first hypervisors were microkernels like L4. All of the fundamentals are in microkernel literature which stretches back to the 80s, though I don't think the

The first hypervisors were microkernels like L4. All of the fundamentals are in microkernel literature which stretches back to the 80s, though I don't think there's a need to read anything before L4 in the 90s.