1. NEWS LAB 薛智文 嵌入式系統暨無線網路實驗室 cwhsueh@csie.ntu.edu.tw
(Embedded Systems and Wireless Networking Laboratory)
Real-Time System Software Group
薛智文
99 專題 April 29th

2. Virtualization Software Architecture - Hypervisor in BIOS
Booting example
DomF0
Dom0
DomU
Windows
Android …
Linux 2
payload 3 3
hypervisor 1
BIOS
hardware
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3. A Fake Domain 0 An example of device architecture … hypervisor BIOS
DomF0
Dom0
DomU
Windows
Android …
Linux
Real Driver
Back-End Driver
Front-End Driver
payload
hypervisor
pass-through
BIOS
hardware
eth0
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4. Application Scenario - Instant On
VM #2
VM #1
VM #3
Windows
Android …
Linux 2 3 3
hypervisor 1
BIOS
hardware
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5. Application Scenario - Local Remote Task
Background
Linux
Android
μC/OS-II
VM #1
VM #2
VM #3 …
AP execute
AP execute
AP execute
Shared Storage
virtual binary loader
Main VM
Windows
AP display
AP display
AP display
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6. Local Remote Task
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7. Task Migration - Between Linux
Two ways to implement in different spaces
user space
VM #1, Linux
VM #2, Linux AP AP
migrate
proc
kernel space
kernel
module
kernel
module
kernel
kernel
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8. OS Migration
Through the hypervisor, virtual machines (or guest OSes) can be migrated.
Xen already supports.
We want to make it more smooth and fast.
VM#1
VM#2
VM#1
VM#2 … …
migrate
hypervisor
hypervisor
hardware
hardware
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9. Task Migration Application - A Portable Task
USB disk
If we support task migration, storing the task state and data to a USB disk is possible.
We can build an ELF binary or a PE binary which contains these data.
Just double click this binary! Then, a task can be resumed on another machine.
VM #1, Linux
ELF Header AP …
Migrate …
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10. Task Migration Application - Energy Consumption Reduction
For example, when users leave their office or lab, but they still want some tasks alive, e.g. client, file downloader.
Through task migration, the tasks on original machines can be migrated to server, and these machines can be shut down to reduce energy consumption.
Machine in Office
Server 2 1 AP AP
migrate
shutdown
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11. Task Migration Application - A Peer to Peer Download
Task migration between different OSes
Windows
Network
Andriod …
P2P Client
P2P Client
Your Machine
P2P Client
migrate
Linux
Remote Host
P2P Client
Linux
P2P Client
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12. AUTONOMOUS unique ID transparent portable social network open source
b2b
small business transaction
cloud
b2b
small business transaction
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13. 便當訂送系統目標 P2P ：自主，少剝削 客戶即時訂附近最新菜色最低價格 店家即時更新最新菜色最低價格
訂1個＋0-5元, 2個+0-3, 3個+0, 10個-Y
自動轉帳
遞送者可送不同店家便當到同一地點
程式維護人員對店家抽成
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14. What do you/we need to do?
At least, regular meeting and discussion.
It is autonomous, anyone share the result.
Send me if you are interested.
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