Hardware-assisted reliability enhancement for embedded multi-core virtualization design

Tsung Han Lin, Yuki Kinebuchi, Alexandre Courbot, Hiromasa Shimada, Takushi Morita, Hitoshi Mitake, Chen Yi Lee, Tatsuo Nakajima

研究成果: Conference contribution

7 被引用数 (Scopus)

抄録

In this paper, we propose a virtualization architecture for the multi-core embedded system to provide more system reliability and security while maintaining the same performance without introducing additional special hardware supports or having to implement complex protection mechanism in the virtualization layer. Virtualization has been widely used in embedded systems, especially in consumer electronics, albeit itself is not a new technique, because there are various needs for both GPOS (General Purpose Operating System) and RTOS (Real Time Operating System). The surge of the multi-core platform in the embedded system also helps the consolidation of the virtualization system for its better performance and lower power consumption. Embedded virtualization design usually uses two kinds of approaches. The first one is to use the traditional VMM, but it is too complicated for use in the embedded environment if there is no additional special hardware support. The other is the use of the micro kernel which imposes a modular design. The guest systems, however, would suffer from considerable amount of modifications because the micro kernel lets the guest systems to run in user space. For some RTOSes and theirs applications originally running in kernel space, it makes this approach more difficult to work because a lot of privileged instructions are used in those codes. To achieve better reliability and keep the virtualization layer design light weighted, a common hardware component adopted in the multi-core embedded processors is used in this work. In the most embedded platforms, vendors provide additional on-chip local memory for each physical core and these local memory areas are private only to their cores. By taking this memory architecture's advantage, we can mitigate above-mentioned problems at once. We choose to re-map the virtualization layer's program called SPUMONE, which it runs all its guest systems in kernel space, on the local memory. By doing so, it can provide additional reliability and security for the entire system because the SPUMONE's design in a multi-core platform has each instance being installed on a separated processor core which is different from the traditional virtualization layer design and the content of each SPUMONE is inaccessible to each others. We also achieve this goal without bringing any overhead to the overall performance.

本文言語English
ホスト出版物のタイトルProceedings - 2011 14th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing, ISORC 2011
ページ241-249
ページ数9
DOI
出版ステータスPublished - 2011 6 9
イベント2011 14th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing, ISORC 2011 - Newport Beach, CA, United States
継続期間: 2011 3 282011 3 31

出版物シリーズ

名前Proceedings - 2011 14th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing, ISORC 2011

Conference

Conference2011 14th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing, ISORC 2011
CountryUnited States
CityNewport Beach, CA
Period11/3/2811/3/31

ASJC Scopus subject areas

  • Artificial Intelligence
  • Computational Theory and Mathematics
  • Computer Science Applications

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