Hardware Virtualization

Hardware Virtualization

1. abstraction of physical hardware level by use of hypervisor/VMM

2. Para virtualization

   • guest OS is modified and recompiled before installation, separate API is made while this
     • hypercalls are sent from OS to hypervisor for communcation
       • more secure , due to uses hypercalls
         • faster

3. Full Virtualization

   • no need for modifications to execute instruction in isolated OS env
     • it uses binary translation
       • less secure , since it uses binary translation in same OS
         • slower

4. harware assissted virtualization

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