OSS + ELC EU 2026

Linux dominates modern infrastructure, yet its monopoly on hardware support and application ecosystems creates a false premise, that Linux is the only viable platform. FreeBSD has quietly built two production grade compatibility layers that challenge this assumption.
LinuxKPI implements Linux kernel APIs directly inside the FreeBSD kernel, enabling unmodified GPU, wireless, and RDMA drivers including but not limited to amdgpu, iwlwifi, and Mellanox OFED to compile and run natively. Contrary too emulation this is source-level API compatibility with negligible runtime overhead.
The Linuxulator complements this at the userland boundary which is a high-performance syscall translation layer that executes unmodified Linux ELF binaries on the FreeBSD kernel, with measured overhead consistently under 2% for I/O-bound workloads.
Combined with FreeBSD Jails and VNET, operators gain isolated Linux environments with native ZFS storage, DTrace observability, and a hardened network stack without a hypervisor.
This talk examines the architecture of both layers, their production deployment patterns, and the upstream contribution model that keeps them current with Linux kernel releases.