The Evolution and Future of Hypervisors

Architecture

Hypervisor architecture. The hypervisor can be decomposed into two parts: the virtual machine monitor (VMM) and the device model.

Virtual machine monitor (VMM)

  • Equivalence property states that program execution has identical observable behavior on bare metal and under VMM, except for timing and resource availability, which are difficult to preserve because of shared physical hardware.
  • Efficiency property states that the majority of program instructions are executed directly on a physical CPU without interference from the hypervisor.
  • Resource control property states that the VMM manages all hardware resources. Virtual machines require permission from the hypervisor to directly access hardware.

Device Model

I/O Virtualization

Evolution

Future

Summary

References

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