Worked on kernel page table synchronization hardening in the geerlingguy/linux repository, focusing on improving boot reliability and stability for x86_64 systems using 4-level paging. Addressed intermittent boot failures by centralizing page table synchronization declarations and introducing kernel-space synchronization helpers in C. Consolidated related logic into linux/pgtable.h to reduce duplication and errors, and implemented architecture-wide synchronization controls through new functions and macros. Enhanced maintainability of the memory management subsystem by defining clear synchronization points and reducing complexity. The work laid a foundation for future paging optimizations, demonstrating depth in kernel development, system programming, and memory management on x86 architectures.