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Full & Paravirtualization Overview
Virtual Machine Monitor
HW Platform
Virtual
Machine
Operating
System
Apps
Virtual
Machine
Operating
System
Apps
Full Virtualization
Runtime modification of Guest OS:
VMM manages the conflict, then
returns to OS
Virtual Machine Monitor
HW Platform
Virtual
Machine
Operating
System
Apps
A
P
I
A
P
I
Virtual
Machine
Operating
System
Apps
A
P
I
A
P
I
Paravirtualization
Static modification of Guest OS prior to
runtime: Privileged instruction calls are
exchanged with API functions provided
by the VMM
Almost no performance degradation
Significant scalability