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A Design of General Memory Protection for Embedded Operating System

Wang Li

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Abstract

This paper describes the design of memory protection based on page-level memory mechanism in the embedded operating system.The approach overlays protection domains on regions of physical memory that are in use by application processes and the operating system kernel.The design is easy to implement and portable between various CPU.Some of the details encountered when implementing this memory protection mechanism on several processors are presented using a sample at the end of the paper.

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What this paper is about

This paper describes the design of memory protection based on page-level memory mechanism in the embedded operating system.The approach overlays protection domains on regions of physical memory that are in use by application processes and the operating system kernel.The design is easy to implement and portable between various CPU.Some of the details encountered when implementing this memory protection mechanism on several processors are presented using a sample at the end of the paper.

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Available abstract

This paper describes the design of memory protection based on page-level memory mechanism in the embedded operating system.The approach overlays protection domains on regions of physical memory that are in use by application processes and the operating system kernel.The design is easy to implement and portable between various CPU.Some of the details encountered when implementing this memory protection mechanism on several processors are presented using a sample at the end of the paper.

Key concepts: Computer science, Memory protection, Overlay, Embedded system, Extended memory, Flat memory model, Embedded operating system, Memory management

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