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A hotfix or quick-fix engineering update (QFE update) is a single, cumulative package that includes information (often in the form of one or more files) that is used to address a problem in a software product (i.e., a software bug). Typically, hotfixes are made to address a specific customer situation.
A kernel hot patching method based on MIPS architecture
This invention relates to the field of hot patching technology, specifically a kernel hot patching method based on the MIPS architecture. The method replaces a patch function in the code segment of the function being patched, and includes the following steps: Step S1: Create a hot-fix environment for the function being patched; Step S2: Based on the hot-fix environment, construct a replacement jump instruction for the function being patched under the MIPS architecture based on the patch function; Step S3: Modify the permissions of the function being patched to write permissions, so that the replacement jump instruction can be written into the function being patched; Step S4: Write the replacement jump instruction into the function being patched. This invention enables the MIPS architecture to fulfill kernel hot patching functionality even when GCC dependencies or architecture dependencies are missing, while also possessing advantages such as high reliability, fast repair speed, and traceability.
Owner:KYLIN CORP