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Parallel and Distributed Processing, IEEE Symposium on (1995)
San Antonio, Texas
Oct. 25, 1995 to Oct. 28, 1995
ISSN: 1063-6374
ISBN: 0-8186-7195-5
pp: 272
G. Bryce , IRISA, Rennes, France
G. Muller , IRISA, Rennes, France
Scalable distributed systems, systems whose processing power remains proportional to the number of component processors, require a programming methodology where an application developer may take existing software modules and plug them together to form a new application. To allow mistrusting modules to interact, the underlying kernel support must offer protection barriers which do not impede performance. The wide-ranging nature of modern applications used on larger scale systems means that existing kernel functions may not necessarily be the most efficient for an application. The kernel must therefore allow an application to dynamically install a function an the kernel; this is one aspect of customization. This paper argues that customization support is one aspect of fine-grained protection for modules needing CPU supervisor privilege. We describe the kernel support required for fine grained protection. Basically, our approach relies on the assignment of a single address space to an application with application modules having their own domain of protection. An experiment was made by modifying the Mach kernel; results show that inter-domain communication by protected procedure call is up to 5 times faster than Mach 3.0 IPC.
operating system kernels; network operating systems; microkernels matching; fine-grained memory protection; scalable distributed systems; processing power; component processors; programming methodology; application developer; software modules; kernel support; protection barriers; larger scale systems; fine-grained protection; single address space; Mach kernel

G. Muller and G. Bryce, "Matching micro-kernels to modern applications using fine-grained memory protection," Parallel and Distributed Processing, IEEE Symposium on(SPDP), San Antonio, Texas, 1995, pp. 272.
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