Build eBPF on ARM: Check the Kernel Before Clang
eBPF portability depends on the target kernel, not just the CPU. This guide covers clang, libbpf, CO-RE, BTF, verifier checks, and ARM loading.
Tag: Kernel configuration
CONFIG_BPF_SYSCALL: The Kernel Flag eBPF Programs Need
CONFIG_BPF_SYSCALL compiles the bpf() syscall into your kernel, the single entry point every eBPF program load and firewall rule requires to work.
Ubuntu Modules-Load.d: Autoload Kernel Modules at Boot
Use /etc/modules-load.d/.conf files with systemd-modules-load.service to persistently autoload kernel modules on Ubuntu. Step-by-step setup and troubleshooting.
Make Menuconfig: Configure Linux Kernel Features Safely
The make menuconfig workflow helps you safely edit Linux kernel features, modules, and dependencies while avoiding common source-tree and ncurses errors.
Enable Kernel CONFIG Options: What to Know First
Stop looking for CONFIG_HAVE_EBPF_JIT in menuconfig. Stop looking for CONFIG HAVE EBPF JIT in menuconfig. It describes a marker, not a feature you switch on.
How Kconfig Controls Linux Kernel Build Options
Kconfig manages tens of thousands of kernel build dependencies through a declarative language, menu system, and.config file that determines what gets compiled.