microsoft/openvmm
Nov 2024 – Jul 2025
4 Months active
Languages Used
RustC++
Technical Skills
CPU IntrinsicsDevice DriversDriver DevelopmentLow-Level ProgrammingMemory ManagementMemory Ordering
Eric Newberry
PROFILE
Eric Newberry
Worked on the microsoft/openvmm repository, focusing on storage virtualization and low-level systems programming using Rust and C++. Delivered features such as a user-mode StorVSC driver for SCSI over VMBus and expanded NVMe-backed storage integration, emphasizing correctness, cross-architecture support, and memory safety. Addressed issues in memory ordering for NVMe doorbells and improved DMA buffer initialization to prevent undefined behavior. Enhanced test coverage with integration tests for NVMe-backed SCSI DVD devices and hardened disk I/O paths against PRD exhaustion. Refactored protocol crates for modularity and future-proofing, while improving build reproducibility and fuzzing accuracy to support robust, scalable storage solutions.
Overall Statistics
Feature vs Bugs
63%Features
Repository Contributions
8Total
Bugs
3
Commits
8
Features
5
Lines of code
3,254
Activity Months4
Your Network
4774 peopleSame Organization
@microsoft.com4720
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Work History
July 2025
2 Commits • 1 Features
Jul 1, 2025July 2025 highlights for microsoft/openvmm: Implemented a new user-mode StorVSC driver for SCSI over VMBus, expanding storage virtualization capabilities and aligning client and host storage stacks. Fixed a critical fuzzing test allocation issue for the NVMe driver, improving fuzz test accuracy and coverage. Updated build configuration (Cargo.lock/Cargo.toml) to ensure reproducible builds and smoother CI. These efforts strengthen storage performance, reliability, and developer productivity, enabling faster iteration and safer deployments of the storage virtualization stack.
2 Commits • 1 Features
Jul 1, 2025July 2025 highlights for microsoft/openvmm: Implemented a new user-mode StorVSC driver for SCSI over VMBus, expanding storage virtualization capabilities and aligning client and host storage stacks. Fixed a critical fuzzing test allocation issue for the NVMe driver, improving fuzz test accuracy and coverage. Updated build configuration (Cargo.lock/Cargo.toml) to ensure reproducible builds and smoother CI. These efforts strengthen storage performance, reliability, and developer productivity, enabling faster iteration and safer deployments of the storage virtualization stack.
July 2025
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 performance-focused monthly summary for microsoft/openvmm highlighting key features delivered, major bugs fixed, overall impact, and technologies demonstrated. The month centered on expanding test coverage for NVMe-backed storage namespaces and hardening PRD handling in the disk I/O path.
June 2025
2 Commits • 1 Features
Jun 1, 2025June 2025 performance-focused monthly summary for microsoft/openvmm highlighting key features delivered, major bugs fixed, overall impact, and technologies demonstrated. The month centered on expanding test coverage for NVMe-backed storage namespaces and hardening PRD handling in the disk I/O path.
March 2025
2 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for microsoft/openvmm focused on delivering two major features, reinforcing test coverage and code modularity, with positive business impact through improved validation and future-proofing of storage abstractions.
2 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for microsoft/openvmm focused on delivering two major features, reinforcing test coverage and code modularity, with positive business impact through improved validation and future-proofing of storage abstractions.
March 2025
November 2024
2 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Focused on strengthening correctness, cross-arch support, and memory safety in microsoft/openvmm. Delivered a NVMe doorbell ordering correctness fix with an sfence to ensure proper operation ordering and prevent race conditions. Generalized the safe_intrinsics crate to support AArch64 and standardized the naming to safe_intrinsics across modules, enabling true cross-architecture safety for low-level intrinsics. Implemented a VfioDmaBuffer zero-initialization guarantee on creation to satisfy trait requirements, implemented via fill_at and updated documentation. These changes improve stability for NVMe-backed I/O virtualization, reduce risk of undefined behavior, and prepare the codebase for broader platform support.
November 2024
2 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Focused on strengthening correctness, cross-arch support, and memory safety in microsoft/openvmm. Delivered a NVMe doorbell ordering correctness fix with an sfence to ensure proper operation ordering and prevent race conditions. Generalized the safe_intrinsics crate to support AArch64 and standardized the naming to safe_intrinsics across modules, enabling true cross-architecture safety for low-level intrinsics. Implemented a VfioDmaBuffer zero-initialization guarantee on creation to satisfy trait requirements, implemented via fill_at and updated documentation. These changes improve stability for NVMe-backed I/O virtualization, reduce risk of undefined behavior, and prepare the codebase for broader platform support.
Activity
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Quality Metrics
Correctness95.0%
Maintainability90.0%
Architecture88.8%
Performance82.6%
AI Usage22.6%
Skills & Technologies
Programming Languages
C++Rust
Technical Skills
CPU IntrinsicsCrate ManagementDevice DriversDevice EmulationDriver DevelopmentEmbedded SystemsFuzzingLow-Level ProgrammingMemory ManagementMemory OrderingRefactoringRustRust ProgrammingSCSIStorage
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