Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
7 Cards in this Set
- Front
- Back
|
What is virtualization?
|
A hardware/software technology that provides isolation of architectural layers in a computer system where that isolation is performed in an efficient manner and that isolation is assumed to be inviolate.
|
|
|
what is an architectural layer?
|
minimal logical or physical collection of computing resources present in a system. like hardware and OS and physical devices
|
|
|
In the P&G virtualization requirements, what are the 3 types of instructions?
|
Privileged instructions, control sensitive instructions, behavior sensitive instructions
|
|
|
what are privileged instructions
|
those that trap if the processor is in user mode and do not trap in system mode
|
|
|
what is control sensitive instructions
|
those that attempt to change the config of resources in the system
|
|
|
what are behavior sensitive instructions?
|
those whose behavior or result depends on the config of resources. like content of relocation register.
|
|
|
What are the two P&G theorems?
|
1. VMM can be made if all the instructions that can affect the correct functioning of the VMM is always trapped and pass control to VMM.
2. IC based computer is recursively virtualizable if it can be virtualized and VMM can exist without timing dependencies. |
