Fine-grained memory access monitoring based on memory protection keys
Based on memory protection key hardware extensions,a lightweight and fine-grained page protection mechanism is proposed.This mechanism overcomes the technical limitations of traditional page protection methods that only support page-grained memory access monitoring,and achieves fine-grained page protection that can intercept each memory access operation.By fully utilizing the user-level thread-local page access permission control provided by memory protection keys,the performance over-head is reduced by more than 30％compared to traditional page protection.Through the integration of fine-grained page protection and compiler instrumentation,the limitations of traditional compiler instru-mentation methods that cannot cover non-recompilable portions of programs are addressed.
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