Virtualization

Virtualization Layer

• Appplication (Programming Language)

  • ex: Java Virtual Machine

• Library

  • ex: WINE

• OS ()

  • KVM

• Instruction Set

  • QEMU emulate I/O, Bochs

• Hardware Abstraction (完全 physically 切開硬體資源, )

  • VMWare, Microsoft Virtual PC, Xen (MBB)

• Software

  • OS layer Hypervisor

Virtualization Method - 這裡主要在探討如何控制I/O

• Full (全部用軟體模擬 and Non-Modified Guest OS)

  • ex: QEMU-emulate I/O

  • Para (在硬體上安裝特殊I/O driver and Modify Guest OS)

  • ex: virtio

• Hardware‐Assisted (從硬體的角度出發去支援, I/O driver 放在 Hypervisor)

I/O Virtualization

• QEMU emulate - Full virtualization

• Virtio (virtual i/o) - Paravirtualization

• Bonding

• PCI-E device assignment

Network Virtualization