MIPS platform-oriented memory virtualization method

Abstract

The invention relates to a microprocessor without interlocked piped stages (MIPS) platform-oriented memory virtualization method. The method comprises an address forming method of MIPS platform-oriented memory virtualization, an address space forming method of MIPS platform-oriented memory virtualization, an address forming and address space mapping method of MIPS platform-oriented memory virtualization, an address forming and address space mapping maintenance mechanism of MIPS platform-oriented memory virtualization and an address mapping realization process of MIPS platform-oriented memory virtualization. The MIPS platform-oriented memory virtualization method has the following advantages that: (1) the technical problems, such as lack of hardware assist and support for a MIPS processor, three layers of address mapping of memory virtualization in the MIPS platform, isolation and security of access to a physical memory by multiple virtual machines, and the like, are all solved; (2) the system has the advantage of light weight; (3) the virtualization application requirement in the embedded field can be satisfied, and the virtualization application requirement in the server field also can be satisfied.

Description

technical field [0001] The invention discloses a memory virtualization method, in particular to a memory virtualization method (MIPSVMem) for a MIPS platform. MIPS refers to "Microprocessor without interlocked piped stages" (Microprocessor without interlocked piped stages), which belongs to the field of computer technology . Background technique [0002] System virtualization is an important research direction of the combination of computer system structure and computer system software. It abstracts the physical resources of the computer system by adding a virtual machine monitor (Virtual Machine Monitor, referred to as VMM) between the computer system hardware and the operating system, and isolates the close dependencies between the hardware system structure and software; through dynamic organization Multiple physical resources such as CPU, memory, and I / O can flexibly build multiple isolated virtual computers to meet diverse application requirements; by exploring the para...

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Problems solved by technology

However, summarizing the existing research results and implementation systems, the existing research and inventions have the following trends and problems: In terms of architecture, most of them are designed, implemented and improved for X86 and other architecture platforms. In the invention of the embedded system platform, virtual machine application technology (such as the use of virtual machine technology to assist in the realization of virtualized multi-window display and detection, corresponding to the Chinese patent publication number CN 102194080A, the name is "a rootkit detection based on kernel virtual machine mechanism and detection method”; the Chinese patent publication number is CN102243571A, and the title is “a multi-window display virtualization operation method for embedded Hypervisor” etc.)

[0011] To sum up, the current research and invention of system virtualization technology for MIPS platform is relatively lacking, especially for MIPS platform without hardware support, the three-layer address mapping faced by memory virtualization, and the relationship between multiple virtual machines accessing physical memory. The research and invention of memory virtualization based on lightweight virtual machine (kernel virtual machine KVM) is even less

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