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Four and a half years after Rust officially entered Linux 6.1, with real Apple GPU and NVMe drivers in production and several public conflicts between maintainers, it is time for a sober technical balance. What works, what still costs, and where the next phase is heading.
eBPF is a Linux kernel technology that lets you load and run verified, high-performance programs without recompiling the kernel or rebooting the system. It runs safely inside a virtual machine in the kernel and underpins tools such as Cilium, Pixie, Falco, and Tetragon for real-time tracing, networking, and security.
eBPF (Extended Berkeley Packet Filter) is a Linux kernel technology that runs verified programs directly inside the kernel, with no modules and no source-code changes. The kernel verifier rejects any unsafe program before it runs, letting teams monitor system calls, network traffic, and I/O at a much lower CPU cost than traditional external probes.
