Allen Pais and Kelsey Steele both of Microsoft presented on the WSL2 kernel — both in the context of the traditional Windows Subsystem for Linux as well as Windows Subsystem for Android. In the presentation they covered the WSL/WSA architecture, how they track the Linux LTS kernel releases, and their upstream kernel contributions. Some of their upstream contributions are around continued testing of Linux kernel release candidates, improving testing of the kernel, and a goal of increasing their upstream contributions.