NDLI: Transparent driver-kernel isolation with VMM intervention

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Transparent driver-kernel isolation with VMM intervention

Content Provider	ACM Digital Library
Author	Endong, Wang Xingjun, Zhang Weiguo, Wu Hao, Zheng Xiaoshe, Dong Yinfeng, Wang Baoke, Chen
Abstract	How to satisfy the on-demand environment while providing highly dependable services with minimum cost is a challenging issue. Improvements in the reusability of virtualization technology have enabled operating system's adaptability, which helps users customize their application environments by using various types and versions of operating systems and drivers. However, driver faults in virtual machine are a critical obstacle to achieve reliable user environment, and may even harm the reliability of the entire server. This paper describes Chariot which transparently isolates drivers in a virtual machine without affecting the reusability of the virtualization environment. An isolation loading mechanism links an isolated driver with monitoring wrappers in a virtual machine, which avoids modifying the VM kernel and drivers. According to the monitoring information, Chariot not only instantaneously updates the access control table which records the memory used by the driver, but also sets the write protection of the shadow page table which is corresponding to the whole kernel space of the virtual machine. As a result, the write operations of a driver can be captured and examined in advance. Experimental results show that Chariot can effectively isolate driver faults and improve the reliability of the operating system in a virtual machine. Furthermore, Chariot can be easily extended to isolate new drivers and ported to other versions of operating systems.
Starting Page	1
Ending Page	16
Page Count	16
File Format	PDF
ISBN	9781450324632
DOI	10.1145/2524211.2524219
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2013-11-03
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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