tezos/riscv-pvm
May 2025 – Apr 2026
12 Months active
Languages Used
RustMarkdownShellAssemblyUnknown
Technical Skills
Compiler DevelopmentCompiler optimizationEmbedded SystemsLow-level programmingRISC-VRISC-V Architecture
Kurtis Charnock
PROFILE
Kurtis Charnock
Kurtis Charnock spent twelve months engineering core features and infrastructure for the tezos/riscv-pvm repository, focusing on durable storage, system call support, and robust signal handling. He designed and implemented Merkle tree-backed persistence layers, enabling data integrity and efficient in-place mutation, and refactored the database interface for unified CRUD operations. Using Rust and leveraging advanced data structures like AVL and Merkle trees, Kurtis improved performance through benchmarking, optimized low-level system programming, and enhanced test reliability. His work included modularizing signal handling for POSIX compatibility and hardening API surfaces, resulting in a maintainable, scalable backend aligned with production reliability requirements.
Overall Statistics
Feature vs Bugs
86%Features
Repository Contributions
111Total
Bugs
5
Commits
111
Features
30
Lines of code
13,231
Activity Months12
Your Network
31 peopleWork History
April 2026
2 Commits • 1 Features
Apr 1, 2026Monthly summary for 2026-04 focusing on key accomplishments in tezos/riscv-pvm. Delivered enhancements to the MerkleLayer verification workflow and expanded test coverage for verification components, reinforcing reliability, traceability, and future production readiness.
2 Commits • 1 Features
Apr 1, 2026Monthly summary for 2026-04 focusing on key accomplishments in tezos/riscv-pvm. Delivered enhancements to the MerkleLayer verification workflow and expanded test coverage for verification components, reinforcing reliability, traceability, and future production readiness.
April 2026
March 2026
18 Commits • 5 Features
Mar 1, 2026March 2026 monthly performance for tezos/riscv-pvm: Delivered substantive Merkle proof-mode enhancements, strengthened data access safety, and modernized internal data structures, driving reliability, security, and maintainability. Key efforts span Merkle prove-mode IDs and resolver tests, enhanced database read APIs with allocation and safe offset validation, AVL/MAVL metadata and data-wrapping refinements, tighter registry resize semantics, and comprehensive integration tests plus documentation.
March 2026
18 Commits • 5 Features
Mar 1, 2026March 2026 monthly performance for tezos/riscv-pvm: Delivered substantive Merkle proof-mode enhancements, strengthened data access safety, and modernized internal data structures, driving reliability, security, and maintainability. Key efforts span Merkle prove-mode IDs and resolver tests, enhanced database read APIs with allocation and safe offset validation, AVL/MAVL metadata and data-wrapping refinements, tighter registry resize semantics, and comprehensive integration tests plus documentation.
February 2026
12 Commits • 2 Features
Feb 1, 2026Concise monthly summary for February 2026 (tezos/riscv-pvm). Key features delivered and major improvements implemented this month: - Benchmarking and Testing Infrastructure Improvements (feature): Enhanced test reliability and benchmarking setup, plus test/benchmark code cleanup. Notable commits include: swap non-equality for expected check (fix(test)), move TestableTmpdir to utils.rs for reuse (refactor(test)), and enabling bench-mode as a dev-dependency to run benchmarks within normal development workflows (refactor(bench)). Other benchmark-related improvements exposed ArcResolver/Node/Tree::set support under bench feature (fix(avl bench)), and standardized bench exports. - Merkle Layer Enhancements (feature): Introduced modal generics and a MerkleLayerMode trait with Normal implementation to support flexible persistence and hashing modes (commit 04ebae...). - Database IO API Improvement (bug): Modify Database::read to return the number of bytes written, improving data handling accuracy (commit 0b244ed0d9...). Major outcomes and business value: - Increased test reliability and faster feedback loops in CI, reducing time-to-detect regressions. - Benchmarks can be executed from standard development flows without special flags, improving performance testing coverage during day-to-day work. - Flexible persistence and hashing modes via MerkleLayerModal design enable broader use cases and easier extension for future persistence strategies. - More accurate data handling in Database IO simplifies integration and reduces edge-case risk in data reads. Overall impact and accomplishments: - Strengthened core library quality (testing, benchmarking, and test utilities) and extended data/persistence capabilities, aligning with reliability, performance visibility, and scalability goals for riscv-pvm. Technologies/skills demonstrated: - Rust libraries and trait-centric design (MerkleLayerMode, Modal generics). - Benchmarking and test infrastructure craftsmanship, including test utilities refactoring and dev-dependency workflow improvements. - Data handling improvements and API design for IO operations.
12 Commits • 2 Features
Feb 1, 2026Concise monthly summary for February 2026 (tezos/riscv-pvm). Key features delivered and major improvements implemented this month: - Benchmarking and Testing Infrastructure Improvements (feature): Enhanced test reliability and benchmarking setup, plus test/benchmark code cleanup. Notable commits include: swap non-equality for expected check (fix(test)), move TestableTmpdir to utils.rs for reuse (refactor(test)), and enabling bench-mode as a dev-dependency to run benchmarks within normal development workflows (refactor(bench)). Other benchmark-related improvements exposed ArcResolver/Node/Tree::set support under bench feature (fix(avl bench)), and standardized bench exports. - Merkle Layer Enhancements (feature): Introduced modal generics and a MerkleLayerMode trait with Normal implementation to support flexible persistence and hashing modes (commit 04ebae...). - Database IO API Improvement (bug): Modify Database::read to return the number of bytes written, improving data handling accuracy (commit 0b244ed0d9...). Major outcomes and business value: - Increased test reliability and faster feedback loops in CI, reducing time-to-detect regressions. - Benchmarks can be executed from standard development flows without special flags, improving performance testing coverage during day-to-day work. - Flexible persistence and hashing modes via MerkleLayerModal design enable broader use cases and easier extension for future persistence strategies. - More accurate data handling in Database IO simplifies integration and reduces edge-case risk in data reads. Overall impact and accomplishments: - Strengthened core library quality (testing, benchmarking, and test utilities) and extended data/persistence capabilities, aligning with reliability, performance visibility, and scalability goals for riscv-pvm. Technologies/skills demonstrated: - Rust libraries and trait-centric design (MerkleLayerMode, Modal generics). - Benchmarking and test infrastructure craftsmanship, including test utilities refactoring and dev-dependency workflow improvements. - Data handling improvements and API design for IO operations.
February 2026
January 2026
17 Commits • 4 Features
Jan 1, 2026January 2026 performance summary for tezos/riscv-pvm focused on delivering robust data-structure improvements, API hardening for persistence, and strengthened validation workflows. Key contributions include extending the Merkle layer with offset-based write and upsert capabilities and unifying write/set traversal, hardening the persistence/API surface with BufMut-backed reads, offset-based writes, and key-existence checks, and modularizing the AVL tree for memory efficiency. The month also advanced test and benchmark reliability with stability-focused changes and hash-consistency checks, reducing risk in production post-deploy.
January 2026
17 Commits • 4 Features
Jan 1, 2026January 2026 performance summary for tezos/riscv-pvm focused on delivering robust data-structure improvements, API hardening for persistence, and strengthened validation workflows. Key contributions include extending the Merkle layer with offset-based write and upsert capabilities and unifying write/set traversal, hardening the persistence/API surface with BufMut-backed reads, offset-based writes, and key-existence checks, and modularizing the AVL tree for memory efficiency. The month also advanced test and benchmark reliability with stability-focused changes and hash-consistency checks, reducing risk in production post-deploy.
December 2025
19 Commits • 3 Features
Dec 1, 2025Month 2025-12 summary for tezos/riscv-pvm: Implemented Merkle-backed data integrity and in-place mutation capabilities, hardened persistence with root hashing and OnceLock-based immutability, and improved initialization and test infrastructure. These changes strengthen data correctness, reliability, and developer ergonomics, establishing a scalable foundation for persistent state with robust testing and performance readiness.
19 Commits • 3 Features
Dec 1, 2025Month 2025-12 summary for tezos/riscv-pvm: Implemented Merkle-backed data integrity and in-place mutation capabilities, hardened persistence with root hashing and OnceLock-based immutability, and improved initialization and test infrastructure. These changes strengthen data correctness, reliability, and developer ergonomics, establishing a scalable foundation for persistent state with robust testing and performance readiness.
December 2025
November 2025
10 Commits • 2 Features
Nov 1, 2025November 2025 highlights: Delivered durable storage improvements in tezos/riscv-pvm with a focus on data integrity, unified interfaces, and observability. Implemented MerkleLayer enhancements (node deletion, root hash computation, invariants checks) andRobust construction with added Debug support. Consolidated the database interface by unifying MerkleWorker and PersistenceLayer into a single Database type, and scaffolded read/write/exists/delete operations with clearer error naming. Initiated ERC-20 benchmarking to quantify performance and guide optimizations. A key bug fix ensured root-hash integrity by invalidating the hash on set operations, preventing stale or incorrect digests.
November 2025
10 Commits • 2 Features
Nov 1, 2025November 2025 highlights: Delivered durable storage improvements in tezos/riscv-pvm with a focus on data integrity, unified interfaces, and observability. Implemented MerkleLayer enhancements (node deletion, root hash computation, invariants checks) andRobust construction with added Debug support. Consolidated the database interface by unifying MerkleWorker and PersistenceLayer into a single Database type, and scaffolded read/write/exists/delete operations with clearer error naming. Initiated ERC-20 benchmarking to quantify performance and guide optimizations. A key bug fix ensured root-hash integrity by invalidating the hash on set operations, preventing stale or incorrect digests.
October 2025
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 | tezos/riscv-pvm focused on code cleanliness and maintainability. Delivered a targeted code cleanup removing a stale TestCacheConfig reference in test_proofs.rs, reflecting updated configuration without affecting functionality.
1 Commits • 1 Features
Oct 1, 2025Month: 2025-10 | tezos/riscv-pvm focused on code cleanliness and maintainability. Delivered a targeted code cleanup removing a stale TestCacheConfig reference in test_proofs.rs, reflecting updated configuration without affecting functionality.
October 2025
September 2025
9 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary focusing on tezos/riscv-pvm: key signal handling and LinuxSigAction improvements delivered to boost reliability, performance, and maintainability of the RISC-V PVM. Implemented a robust signal disposition model, immutable dispositions for critical signals, SA_SIGINFO-based handler selection, and synchronous signal support; fixed kernel RISC-V sigaction struct fields; added zerocopy LinuxSigAction read/write to reduce IO overhead; expanded tests coverage and documentation clarifications for rt_sigaction.
September 2025
9 Commits • 2 Features
Sep 1, 2025September 2025 monthly summary focusing on tezos/riscv-pvm: key signal handling and LinuxSigAction improvements delivered to boost reliability, performance, and maintainability of the RISC-V PVM. Implemented a robust signal disposition model, immutable dispositions for critical signals, SA_SIGINFO-based handler selection, and synchronous signal support; fixed kernel RISC-V sigaction struct fields; added zerocopy LinuxSigAction read/write to reduce IO overhead; expanded tests coverage and documentation clarifications for rt_sigaction.
August 2025
7 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Delivered foundational RISC-V signal handling for tezos/riscv-pvm. Key outcomes: established core data structures and actions for handling signals on RISC-V (sigaction storage, per-thread signal mask/context management), integrated signal action storage/retrieval and stack-based push/pop of signal context, and added support for rt_sigprocmask(2) with error handling. Also performed focused code cleanup in the PVM common module to reduce confusion and improve maintainability. These changes lay the groundwork for correct signal semantics on RISC-V, enabling more robust inter-thread signaling and future system-call plumbing.
7 Commits • 1 Features
Aug 1, 2025Month: 2025-08 — Delivered foundational RISC-V signal handling for tezos/riscv-pvm. Key outcomes: established core data structures and actions for handling signals on RISC-V (sigaction storage, per-thread signal mask/context management), integrated signal action storage/retrieval and stack-based push/pop of signal context, and added support for rt_sigprocmask(2) with error handling. Also performed focused code cleanup in the PVM common module to reduce confusion and improve maintainability. These changes lay the groundwork for correct signal semantics on RISC-V, enabling more robust inter-thread signaling and future system-call plumbing.
August 2025
July 2025
4 Commits • 2 Features
Jul 1, 2025Month: 2025-07 — Tezos/riscv-pvm performance and delivery highlights. Two major feature deliveries focused on documentation quality and signal handling architecture, with no reported major bugs fixed this month. Overall impact centers on maintainability, clarity of the PVM signal path, and groundwork for future POSIX compatibility.
July 2025
4 Commits • 2 Features
Jul 1, 2025Month: 2025-07 — Tezos/riscv-pvm performance and delivery highlights. Two major feature deliveries focused on documentation quality and signal handling architecture, with no reported major bugs fixed this month. Overall impact centers on maintainability, clarity of the PVM signal path, and groundwork for future POSIX compatibility.
June 2025
10 Commits • 6 Features
Jun 1, 2025June 2025 monthly summary for tezos/riscv-pvm: delivered core system call support, security hardening, and maintainability improvements. Shifted default branch to main, added robust parameter validation, implemented resource control (prlimit64) and IOCTL stub, and enforced filesystem access denial policy. These changes improve reliability, security, and readiness for multi-process/threading and policy-driven runtime behavior.
10 Commits • 6 Features
Jun 1, 2025June 2025 monthly summary for tezos/riscv-pvm: delivered core system call support, security hardening, and maintainability improvements. Shifted default branch to main, added robust parameter validation, implemented resource control (prlimit64) and IOCTL stub, and enforced filesystem access denial policy. These changes improve reliability, security, and readiness for multi-process/threading and policy-driven runtime behavior.
June 2025
May 2025
2 Commits • 1 Features
May 1, 2025May 2025 monthly highlights for tezos/riscv-pvm: delivered performance-optimized changes to the RISC-V PVM and tightened security by removing privileged instructions, delivering measurable business value and maintainable code. Impact: Improved runtime efficiency for the PVM compilation threshold path and a smaller security surface by enforcing user-mode instruction boundaries. The changes align with the spec and simplify future maintenance.
May 2025
2 Commits • 1 Features
May 1, 2025May 2025 monthly highlights for tezos/riscv-pvm: delivered performance-optimized changes to the RISC-V PVM and tightened security by removing privileged instructions, delivering measurable business value and maintainable code. Impact: Improved runtime efficiency for the PVM compilation threshold path and a smaller security surface by enforcing user-mode instruction boundaries. The changes align with the spec and simplify future maintenance.
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Quality Metrics
Correctness94.6%
Maintainability89.0%
Architecture90.6%
Performance87.0%
AI Usage23.6%
Skills & Technologies
Programming Languages
AssemblyMarkdownRustShellUnknown
Technical Skills
AVL treesAlgorithm DesignAlgorithmsBackend DevelopmentBenchmarkingCode CleanupCode OptimizationCompiler DevelopmentCompiler developmentCompiler optimizationConfiguration ManagementData StructuresDevOpsDocumentationEmbedded Systems
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