Explain hypervisor reference model.

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 HYPERVISOR REFERENCE MODEL

There are 3 main modules coordinate in order to emulate the underlying hardware: 

1. Dispatcher 2. Allocator 3. Interpreter




1. Dispatcher

 The dispatcher behaves like the entry point of the monitor and reroutes the instructions of the virtual machine instance to one of the other two modules. 

2. Allocator 

 The allocator is responsible for deciding the system resources to be provided to the virtual machine instance. It means whenever virtual machine tries to execute an instruction that results in changing the machine resources associated with the virtual machine, the allocator is invoked by the dispatcher.

3. Interpreter

 The interpreter module consists of interpreter routines. These are executed, whenever virtual machine executes a priviliged instruction.


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