geerlingguy/linux
Jul 2025 – Jul 2025
1 Month active
Languages Used
AssemblyC
Technical Skills
Assembly LanguageAssembly languageEmbedded SystemsKernel DevelopmentKernel developmentLow-Level Programming
John David Anglin
PROFILE
John David Anglin
Worked on the geerlingguy/linux repository to enhance the PA-RISC kernel, focusing on security and memory management. Introduced user-space read access probing before memory operations to prevent faults and strengthen security, utilizing Assembly and C for low-level systems programming. Improved memory management by ensuring robust page table entry flushing and more reliable cache and TLB behavior, addressing issues in page fault handling and eliminating non-deterministic warnings. Clarified kernel documentation to aid future maintainability, particularly around TLB and access checks. The work emphasized correctness and predictability in kernel operations, drawing on expertise in embedded systems, memory management, and kernel development.
Overall Statistics
Feature vs Bugs
33%Features
Repository Contributions
8Total
Bugs
2
Commits
8
Features
1
Lines of code
130
Activity Months1
Your Network
1202 peopleSame Organization
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1201
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Andrey AlbershteynMember
Aaradhana SahuMember
Aaron MaMember
Ian AbbottMember
Work History
July 2025
8 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary covering geerlingguy/linux PA-RISC improvements: security hardening via user-space read access probing, memory-management correctness with PTE handling and cache/TLB flush reliability, and kernel documentation clarifications. These changes improve security, stability, and maintainability, reducing fault exposure and enabling more predictable memory behavior.
8 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary covering geerlingguy/linux PA-RISC improvements: security hardening via user-space read access probing, memory-management correctness with PTE handling and cache/TLB flush reliability, and kernel documentation clarifications. These changes improve security, stability, and maintainability, reducing fault exposure and enabling more predictable memory behavior.
July 2025
Activity
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Quality Metrics
Correctness91.2%
Maintainability87.6%
Architecture87.6%
Performance82.6%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyC
Technical Skills
Assembly LanguageAssembly languageEmbedded SystemsKernel DevelopmentKernel developmentLow-Level ProgrammingLow-Level Systems ProgrammingLow-level programmingMemory ManagementSystem ProgrammingSystem programming
Repositories Contributed To
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