OpenXiangShan/GEM5
Sep 2025 – Mar 2026
2 Months active
Languages Used
AssemblyC++Python
Technical Skills
Low-Level Systems ProgrammingMemory ManagementOperating System DevelopmentRISC-V ArchitectureVirtual MemoryCPU architecture
xixi-shredp
PROFILE
Xixi-shredp
During their work on the OpenXiangShan/GEM5 repository, XJ developed foundational RISC-V memory management enhancements by implementing SV48 and SV48x4 support, expanding GEM5’s address space handling for scalable simulations. This involved updating page table logic, TLB entries, and walker mechanisms using C++ and Assembly, ensuring correct translation and protection semantics for larger memory configurations. XJ also improved performance telemetry by correcting CPU store-bound memory stall statistics in the Out-of-Order scheduler, enhancing the accuracy of memory subsystem profiling. Their contributions demonstrated depth in low-level systems programming, memory management, and CPU architecture, resulting in robust, maintainable improvements to GEM5’s core infrastructure.
Overall Statistics
Feature vs Bugs
50%Features
Repository Contributions
2Total
Bugs
1
Commits
2
Features
1
Lines of code
1,267
Activity Months2
Your Network
27 peopleShared Repositories
27
Work History
March 2026
1 Commits
Mar 1, 2026Concise monthly summary for 2026-03 focusing on business value and technical achievements for OpenXiangShan/GEM5. No new user-facing features were released this month. The primary focus was correcting CPU store-bound memory stall statistics in the Out-of-Order (OOO) scheduler to improve telemetry reliability and optimization decisions.
1 Commits
Mar 1, 2026Concise monthly summary for 2026-03 focusing on business value and technical achievements for OpenXiangShan/GEM5. No new user-facing features were released this month. The primary focus was correcting CPU store-bound memory stall statistics in the Out-of-Order (OOO) scheduler to improve telemetry reliability and optimization decisions.
March 2026
September 2025
1 Commits • 1 Features
Sep 1, 20252025-09 Monthly summary for OpenXiangShan/GEM5: Delivered critical RISC-V memory management enhancement by adding SV48 and SV48x4 support, expanding address space handling and enabling larger-scale simulations. Commit focused on arch-riscv: add support for sv48 and sv48x4, providing the foundation for scalable memory configurations. No major bugs fixed in this period; effort focused on robust feature delivery and code quality, with ongoing validation to ensure translation and protection semantics remain correct across larger page tables.
September 2025
1 Commits • 1 Features
Sep 1, 20252025-09 Monthly summary for OpenXiangShan/GEM5: Delivered critical RISC-V memory management enhancement by adding SV48 and SV48x4 support, expanding address space handling and enabling larger-scale simulations. Commit focused on arch-riscv: add support for sv48 and sv48x4, providing the foundation for scalable memory configurations. No major bugs fixed in this period; effort focused on robust feature delivery and code quality, with ongoing validation to ensure translation and protection semantics remain correct across larger page tables.
Activity
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Quality Metrics
Correctness85.0%
Maintainability80.0%
Architecture85.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC++Python
Technical Skills
CPU architectureLow-Level Systems ProgrammingMemory ManagementOperating System DevelopmentRISC-V ArchitectureVirtual Memoryperformance optimizationsystem programming
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