tianocore/edk2
Dec 2025 – Dec 2025
1 Month active
Languages Used
C
Technical Skills
UEFI developmentembedded systemssystem programming
Vishnu Pajjuri
PROFILE
Vishnu Pajjuri
Worked on the tianocore/edk2 repository to enhance ARM platform boot stability by refining the enablement of 52-bit physical and virtual addressing. Addressed a critical issue where systems supporting only FEAT_LPA, but not LPA2, experienced boot failures by ensuring 52-bit PA/VA is activated exclusively when LPA2 support is explicitly present. Otherwise, the system reverts to 48-bit addressing, maintaining correct MMU configuration for 4K pages. This solution, implemented in C within ArmPkg and UefiCpuPkg, improved reliability and compatibility across diverse ARM hardware. The work demonstrated strong skills in UEFI development, embedded systems, and low-level system programming.
Overall Statistics
Feature vs Bugs
0%Features
Repository Contributions
1Total
Bugs
1
Commits
1
Features
0
Lines of code
10
Activity Months1
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Shared Repositories
232
Work History
December 2025
1 Commits
Dec 1, 2025December 2025 monthly summary for tianocore/edk2 focused on stabilizing the ARM boot path by tightening 52-bit PA/VA enablement (LPA2) behind explicit LPA2 support. This prevents boot failures on FEAT_LPA-only systems where LPA2 is not fully implemented, by falling back to 48-bit addressing when LPA2 is not advertised. The change was implemented in ArmPkg and UefiCpuPkg, aligning with prior LPA2 work and preserving correct MMU configuration for diverse hardware. Impact: reduced boot failures on ARM platforms, improved reliability and compatibility across devices regardless of LPA/LPA2 advertising, and better alignment with existing LPA2-related work. Co-authored-by: Ganapatrao Kulkarni; Signed-off-by: Vishnu Pajjuri
1 Commits
Dec 1, 2025December 2025 monthly summary for tianocore/edk2 focused on stabilizing the ARM boot path by tightening 52-bit PA/VA enablement (LPA2) behind explicit LPA2 support. This prevents boot failures on FEAT_LPA-only systems where LPA2 is not fully implemented, by falling back to 48-bit addressing when LPA2 is not advertised. The change was implemented in ArmPkg and UefiCpuPkg, aligning with prior LPA2 work and preserving correct MMU configuration for diverse hardware. Impact: reduced boot failures on ARM platforms, improved reliability and compatibility across devices regardless of LPA/LPA2 advertising, and better alignment with existing LPA2-related work. Co-authored-by: Ganapatrao Kulkarni; Signed-off-by: Vishnu Pajjuri
December 2025
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Quality Metrics
Correctness100.0%
Maintainability80.0%
Architecture80.0%
Performance80.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
C
Technical Skills
UEFI developmentembedded systemssystem programming
Repositories Contributed To
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