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9a6df65d5c
Introduce a 'jit_required' bitfield flag in struct bpf_prog to track whether a BPF program strictly requires the JIT compiler to run. This prevents a dangerous runtime fallback to the interpreter for features that are only implemented in the JIT compiler. Currently, bpf_prog_has_kfunc_call() is used only for kernel function calls, replace the kfunc-specific helper with the new 'jit_required' flag. This makes it easy to support other JIT-only BPF features, such as inlined helpers. Suggested-by: Alexei Starovoitov <ast@kernel.org> Suggested-by: KaFai Wan <kafai.wan@linux.dev> Suggested-by: Leon Hwang <leon.hwang@linux.dev> Acked-by: Leon Hwang <leon.hwang@linux.dev> Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>