December 2025 monthly summary for oxidecomputer/propolis: Delivered Viona Driver IOport-based Notification Handling to reduce VM exits, improving I/O throughput for guest virtqueues. Implemented an IO port fast path in the Viona driver to process notifications about new virtqueue entries, reducing VM exits to userspace and boosting throughput. Co-authored by iximeow. This work advances virtualization performance goals and establishes a foundation for further VM-exit reductions.

September 2025: Performance-focused delivery for oxidecomputer/propolis. Implemented NVMe Doorbell Buffer feature to elide unnecessary doorbell signaling for virtualized NVMe queues, and concurrency improvements via resource accessors plus a new resource access trait. No formal bug fixes reported this month; emphasis was on delivering business value through lower virtualization overhead, improved concurrency, and scalable resource management.

August 2025 (oxidecomputer/propolis) focused on build reliability, toolchain stability, and data-path efficiency to support faster, more reliable releases. Key initiatives delivered two major features: (1) Build System Stabilization and Rust Compatibility to ensure repeatable builds and ecosystem alignment (Rust toolchain pinned to 1.88.0, clippy nits addressed for Rust 1.89, CI actions upgraded). (2) Enable direct loaning of guest packet data for viona devices, eliminating extra memory copies and improving transmission efficiency with updated Chelsio driver support. These changes reduced CI flakiness, improved throughput, and strengthened security posture of the release pipelines.

May 2025 monthly summary for oxidecomputer/propolis focusing on memory sizing enhancements and documentation quality. Implemented changes to support larger guest memory configurations and improved rustdoc documentation across modules, aligning with platform readiness and developer experience.

April 2025 monthly summary for oxidecomputer/propolis: Delivered a security-focused patch by upgrading critical dependencies (OpenSSL, Tokio, crossbeam-channel) and aligning packaging with Omicron ecosystem standards. Updates to Cargo.lock and Cargo.toml ensure consistent interdependencies and improved security posture. The work reduces vulnerability surface, enhances build reproducibility, and positions the project for smoother deployments across environments.

March 2025 accomplishments focused on expanding backend interoperability, API reliability, and maintainability for oxidecomputer/propolis. Key features delivered include cross-backend storage health operations, improved cross-platform device identification, and dependency/versioning upgrades to align with current security and performance standards. These efforts reduce fragmentation across backends, stabilize the viona API across operating systems, and simplify future upgrades and maintenance.

February 2025 monthly summary for oxidecomputer/propolis: Focused on delivering a high-value feature for device configurability and tightening security posture.

January 2025 — oxidecomputer/propolis: Focused on performance instrumentation groundwork and code quality improvements. Key outcomes include initial AMD Performance Monitoring groundwork (API version bump and PMU data structures) enabling future AMD-specific perf data capture, and Rust 1.84 clippy fixes to align lifetimes and string length calculations for maintainability.

December 2024 monthly summary for oxidecomputer/propolis focusing on the Viona device path stabilization. The work prioritized stability and clear next steps for performance-sensitive features, with meticulous change control and documentation to support future optimization.

Month: 2024-11. This period focused on stabilizing core IO paths, improving code quality, and aligning toolchains to support upcoming features in both oxidecomputer/propolis and oxidecomputer/crucible. Implemented graceful UDSock disconnection handling, fixed Rust 1.83 clippy lint issues, and upgraded the Rust toolchain to 1.81 to stabilize the #[expect] attribute in downstairs/upstairs crates. These changes reduce runtime risk, improve maintainability, and enable smoother CI/CD.

September 2024 monthly summary for oxidecomputer/propolis: Delivered a platform-specific feature to configure Viona device parameters on illumos, wiring up the configuration flow to use dedicated parameter structures and logic. This work improves per-device tuning, enhances packet handling efficiency, and optimizes memory management, laying groundwork for additional parameter-driven optimizations and broader platform support.