Hardware Virtualization

Hardware Virtualization

1. ring layers

   • types
     • ring3
       • lowest privelege
     • ring0
       • highest privelege
     • ring 1
       • OS
     • ring2
       • protection mode
   • mechanisms to protect data and functionality from faults and malicious behaviour

2. types

   • para virtualization
     • vmware and xen servers
     • more secure
     • faster than full virtualization
     • less portable and compatible
   • full virtualization
     • less secure
     • slow in operations
     • more portable and compatible
     • microsoft and parallel systems
   • hardware assisted virtualization