Building Fault-Tolerant Embedded System Using Virtualization
Recently virtualization has been widely adopted by various embedded systems. Virtualized embedded systems can fully enjoy many advantages of virtualization. On the other hand, it also complicates the overall structure of the system by introducing additional software layer called virtual machine monitor, which has a harmful effect on the continuing operation of the embedded system. In this paper, we first design a virtual machine monitor for embedded system including memory virtualization which exploits the MMU functionality of underlying microprocessor. We also propose a fault-tolerant embedded system on top of the virtualized embedded system using well-known software fault tolerance technique. By conducting performance evaluation studies, we show that the proposed system does not degrade the performance of the embedded system significantly, while making the system robust against errors.
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Document Type: Research Article
Affiliations: Department of Computer Science, Sangmyung University, Hongjimun 2, Jongno-gu, Seoul 03016, Korea
Publication date: November 1, 2016
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