Microdrivers: A New Architecture for Device Drivers
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| Venue: | In Proc. of HotOS XI, pp 85—90 |
| Citations: | 5 - 2 self |
BibTeX
@INPROCEEDINGS{Ganapathy_microdrivers:a,
author = {Vinod Ganapathy and Arini Balakrishnan and Michael M. Swift and Somesh Jha},
title = {Microdrivers: A New Architecture for Device Drivers},
booktitle = {In Proc. of HotOS XI, pp 85—90},
year = {},
pages = {7--9}
}
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Abstract
Commodity operating systems achieve good performance by running device drivers in-kernel. Unfortunately, this architecture offers poor fault isolation. This paper introduces microdrivers, which reduce the amount of driver code running in the kernel by splitting driver functionality between a small kernel-mode component and a larger user-mode component. This paper presents the microdriver architecture and techniques to refactor existing device drivers into microdrivers, achieving most of the benefits of user-mode drivers with the performance of kernel-mode drivers. Experiments on a network driver show that 75 % of its code can be removed from the kernel without affecting common-case performance. 1
