Kernel code soft fault tolerance method for hardware unrecoverable memory faults

Abstract

The invention discloses a kernel code soft fault tolerance method for hardware unrecoverable memory faults. The method comprises the following implementation steps of: 1) when an operating system loads the kernel codes to a physical memory, marking the kernel codes as main codes, setting multiple code copies for each segment of kernel codes, and loading the copies into the physical memory; 2) when the operating system runs, if the memory of the kernel codes is in memory exceptions, locating an error kernel page of the current main codes, comparing the error kernel page codes with the code copies, if errors of the codes of the error kernel page is determined, suspending the running of a computer, modifying a kernel code page table of the error kernel page, selecting a regular code copy from the code copies corresponding to the current main codes to substitute the current main codes, and then, keeping on running the computer. The method can improve the running stability of the operating system, enhance the reliability of a kernel module, reducing the possibility of error in the memory and reducing the interference of memory fault on the running of the operating system.

Description

technical field [0001] The invention relates to a fault-tolerant method when operating system kernel codes are running, in particular to a fault-tolerant method for alleviating the influence of hardware non-recoverable memory faults on the running stability of the operating system itself through software. Background technique [0002] Since the appearance of the first computer in 1946, the computer system has been using the Von Neumann structure for storing instructions. Under the von Neumann structure, instructions are stored in memory as data, and the processor fetches instructions from memory and decodes and executes them one by one. After entering the post-CMOS era, due to the continuous increase in transistor density in chips, memory soft errors (single event updates, SEUs) caused by chip aging and radioactivity are increasing, which can easily lead to memory failures that store instructions , it is very likely to cause serious logic errors with disastrous consequences...

AI Technical Summary

Problems solved by technology

The operating system kernel code is one of the most frequently run codes in the computer system. Errors in the kernel code will affect the normal operation of the entire system. Due to the existence of hardware non-recoverable memory faults, it will directly affect the operation of the operating system kernel code. , affecting the stability and reliability of computer systems

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