microsoft/openvmm
Aug 2025 – Jan 2026
3 Months active
Languages Used
Rust
Technical Skills
ACPISystem ProgrammingVirtualizationSecurityRustdebugging
Jenna Goddard
PROFILE
Jenna Goddard
Worked on the microsoft/openvmm hypervisor, focusing on virtualization, security, and system programming using Rust. Delivered a critical fix for NMI injection on AMD64 Trusted VMs with Open HCL by introducing MadtLocalNmiSource and registering LINT1 in the MADT, improving interrupt reliability. Implemented Indirect Branch Prediction Barrier (IBPB) on VM entry for VTL 2, updating VMSA and IGVM file generation to strengthen host-guest isolation. Enhanced memory-path safety and observability in SNP code by removing redundant checks, improving logging for invalid GHCB messages, and reducing technical debt. Prioritized maintainability, debugging efficiency, and compliance with evolving security requirements throughout development.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
6Total
Bugs
1
Commits
6
Features
3
Lines of code
96
Activity Months3
Your Network
54 peopleShared Repositories
54
Aurélien BomboMember
Alex LandauMember
Asher KarivMember
Jiong Wang (Arm Ltd)Member
weiding-msftMember
Ben HillisMember
Bhargav ShahMember
Robert NowotnyMember
justus-camp-microsoftMember
Work History
January 2026
4 Commits • 2 Features
Jan 1, 2026January 2026 monthly highlights for microsoft/openvmm focused on hardening memory-path safety, improving observability, and reducing technical debt in SNP-related code paths. The work delivered aligns with security, maintainability, and debugging efficiency to support reliability and faster incident response in production.
4 Commits • 2 Features
Jan 1, 2026January 2026 monthly highlights for microsoft/openvmm focused on hardening memory-path safety, improving observability, and reducing technical debt in SNP-related code paths. The work delivered aligns with security, maintainability, and debugging efficiency to support reliability and faster incident response in production.
January 2026
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focused on security hardening for VTL 2 in the microsoft/openvmm repository. Implemented IBPB on VM entry for VTL 2 and updated VMSA/IGVM file generation to ensure branch prediction information is isolated when entering a virtual machine, strengthening host-guest isolation without notable performance impact.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025 monthly summary focused on security hardening for VTL 2 in the microsoft/openvmm repository. Implemented IBPB on VM entry for VTL 2 and updated VMSA/IGVM file generation to ensure branch prediction information is isolated when entering a virtual machine, strengthening host-guest isolation without notable performance impact.
August 2025
1 Commits
Aug 1, 2025August 2025 — microsoft/openvmm: Implemented a critical NMI injection fix for Trusted VMs on AMD64 when using Open HCL. Introduced MadtLocalNmiSource and registered LINT1 as the local NMI error source in the MADT to resolve the injection failure (commit 35ce80356be48bdb7b33b4fa2aafdd9189a40669). This work improves stability for Trusted VM workloads and reduces debugging cycles in Open HCL deployments.
1 Commits
Aug 1, 2025August 2025 — microsoft/openvmm: Implemented a critical NMI injection fix for Trusted VMs on AMD64 when using Open HCL. Introduced MadtLocalNmiSource and registered LINT1 as the local NMI error source in the MADT to resolve the injection failure (commit 35ce80356be48bdb7b33b4fa2aafdd9189a40669). This work improves stability for Trusted VM workloads and reduces debugging cycles in Open HCL deployments.
August 2025
Activity
Loading activity data...
Quality Metrics
Correctness86.6%
Maintainability90.0%
Architecture86.6%
Performance80.0%
AI Usage23.4%
Skills & Technologies
Programming Languages
Rust
Technical Skills
ACPIRustSecuritySystem ProgrammingVirtualizationdebugginghypervisor developmentkernel developmentloggingmemory managementsystem programming
Repositories Contributed To
Overview of all repositories you've contributed to across your timeline