pulp-platform/cheshire
Nov 2024 – Oct 2025
4 Months active
Languages Used
AssemblyMakefileSystemVerilogYAML
Technical Skills
Embedded SystemsInterrupt HandlingLow-Level ProgrammingSystemVerilogTestingDebugging
Nils Wistoff
PROFILE
Nils Wistoff
Contributed to the pulp-platform/cheshire repository by building and modernizing core hardware features, focusing on interrupt handling and virtualization. Developed foundational Core Local Interrupt Controller (CLIC) testing infrastructure and upgraded the CVA6 core to support vCLIC and virtual machine interrupt delegation, enhancing scalability and performance. Addressed debugging reliability by correcting exception handling in the CVA6 debug module and improved simulation stability in the SLINK environment. Reinforced CI/CD workflows by upgrading environment provisioning with GitHub Actions. Leveraged SystemVerilog, Assembly, and YAML, applying skills in embedded systems, hardware simulation, and low-level programming to deliver robust, maintainable hardware development solutions.
Overall Statistics
Feature vs Bugs
40%Features
Repository Contributions
5Total
Bugs
3
Commits
5
Features
2
Lines of code
1,187
Activity Months4
Your Network
28 peopleWork History
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary: Delivered a pivotal core modernization for the Cheshire repo, upgrading CVA6 to pulp-v2 with vCLIC support and VM interrupt delegation, with tests and dependency adjustments. This upgrade enables hardware-level interrupt delegation to virtual machines, improving virtualization performance and scalability across the platform.
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary: Delivered a pivotal core modernization for the Cheshire repo, upgrading CVA6 to pulp-v2 with vCLIC support and VM interrupt delegation, with tests and dependency adjustments. This upgrade enables hardware-level interrupt delegation to virtual machines, improving virtualization performance and scalability across the platform.
October 2025
April 2025
2 Commits
Apr 1, 2025April 2025 monthly summary focusing on reliability and stability improvements in the Cheshire repository. The work centered on mitigating runtime instability in the SLINK simulator and reinforcing CI/CD reliability through environment provisioning upgrades. These changes reduce production risk and create a more predictable development and release process.
April 2025
2 Commits
Apr 1, 2025April 2025 monthly summary focusing on reliability and stability improvements in the Cheshire repository. The work centered on mitigating runtime instability in the SLINK simulator and reinforcing CI/CD reliability through environment provisioning upgrades. These changes reduce production risk and create a more predictable development and release process.
December 2024
1 Commits
Dec 1, 2024December 2024: Stabilized CVA6 debugging in Cheshire. Key fix: Correct HaltAddress and ExceptionAddress calculations relative to AmDbg, eliminating incorrect jumps during debugging (OpenOCD). Linked to commit 44fb98ab8c0365475d2c8417bf94d62ab9b9cfa0 (#173). Impact: more reliable exception handling, reduced debugging time, and faster validation of CVA6 changes.
1 Commits
Dec 1, 2024December 2024: Stabilized CVA6 debugging in Cheshire. Key fix: Correct HaltAddress and ExceptionAddress calculations relative to AmDbg, eliminating incorrect jumps during debugging (OpenOCD). Linked to commit 44fb98ab8c0365475d2c8417bf94d62ab9b9cfa0 (#173). Impact: more reliable exception handling, reduced debugging time, and faster validation of CVA6 changes.
December 2024
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for pulp-platform/cheshire focused on establishing robust testing infrastructure for Core Local Interrupt Controller (CLIC). Implemented foundational CLIC testing support, updated documentation and build configurations, and prepared the team for future CLIC enhancements. This work reduces validation risk, accelerates future interrupt-related development, and demonstrates strong testing and documentation discipline.
November 2024
1 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for pulp-platform/cheshire focused on establishing robust testing infrastructure for Core Local Interrupt Controller (CLIC). Implemented foundational CLIC testing support, updated documentation and build configurations, and prepared the team for future CLIC enhancements. This work reduces validation risk, accelerates future interrupt-related development, and demonstrates strong testing and documentation discipline.
Activity
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Quality Metrics
Correctness92.0%
Maintainability92.0%
Architecture94.0%
Performance92.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
AssemblyMakefileSystemVerilogYAML
Technical Skills
CI/CDDebuggingEmbedded SystemsGitHub ActionsHardware DesignHardware DevelopmentHardware SimulationInterrupt HandlingLow-Level ProgrammingRISC-V ArchitectureSystemVerilogTestingVirtualization
Repositories Contributed To
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