On Fri, Feb 18, 2022 at 7:15 PM Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> wrote: > > When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable > is permanently set to 1 and setting any other value than that will return > in failure. > > Add the above description in the help text of config BPF_JIT_ALWAYS_ON, and > then we can distinguish between BPF_JIT_ALWAYS_ON and BPF_JIT_DEFAULT_ON. > > Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> > --- > kernel/bpf/Kconfig | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/kernel/bpf/Kconfig b/kernel/bpf/Kconfig > index d24d518..cbf3f65 100644 > --- a/kernel/bpf/Kconfig > +++ b/kernel/bpf/Kconfig > @@ -58,6 +58,10 @@ config BPF_JIT_ALWAYS_ON > Enables BPF JIT and removes BPF interpreter to avoid speculative > execution of BPF instructions by the interpreter. > > + When CONFIG_BPF_JIT_ALWAYS_ON is enabled, /proc/sys/net/core/bpf_jit_enable > + is permanently set to 1 and setting any other value than that will return > + in failure. nit: "return failure" (no "in"). Other than this, Acked-by: Song Liu <songliubraving@xxxxxx> > + > config BPF_JIT_DEFAULT_ON > def_bool ARCH_WANT_DEFAULT_BPF_JIT || BPF_JIT_ALWAYS_ON > depends on HAVE_EBPF_JIT && BPF_JIT > -- > 2.1.0 >
