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CS6200 Final By Lecture > P3L6 > Flashcards

P3L6 Flashcards

1
Q

VMM

A

Virtual machine monitor

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2
Q

VMM Goals

A
  1. Fidelity
  2. Performance
  3. Safety + Isolation
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3
Q

Type 1

A

Hypervisor based

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4
Q

Type 2

A

Hosted

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5
Q

Virtualization requirements

A
  • Virtual platform interfaces to VMs
  • Provide isolation across VMs
  • Protect OS from Apps
  • Protect VMM from guest
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6
Q

Protection Levels

A

4 rings

3: apps
1: OS
0: hypervisor

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7
Q

Protection Modes

A

Root and non-root

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8
Q

Key for CPU virtualization

A

trap and emulate

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9
Q

Binary translation

A

rewrite the VM binary to never issue 17 instructions

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10
Q

Paravirtualization

A

give up on unmodified guests

modify guest so that it makes explicit calls to hypervisor

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11
Q

3 Models for Device Virtualizations

A

Passthrough
Hypervisor-direct model
Split-Device Driver Model

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CS6200 Final By Lecture (9 decks)

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