diff options
Diffstat (limited to 'kernel/bpf/core.c')
| -rw-r--r-- | kernel/bpf/core.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c index ab9576b3bde5..64c4b13952f0 100644 --- a/kernel/bpf/core.c +++ b/kernel/bpf/core.c @@ -458,6 +458,7 @@ noinline u64 __bpf_call_base(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) } EXPORT_SYMBOL_GPL(__bpf_call_base); +#ifndef CONFIG_BPF_JIT_ALWAYS_ON /** * __bpf_prog_run - run eBPF program on a given context * @ctx: is the data we are operating on @@ -923,6 +924,13 @@ load_byte: } STACK_FRAME_NON_STANDARD(__bpf_prog_run); /* jump table */ +#else +static unsigned int __bpf_prog_ret0(void *ctx, const struct bpf_insn *insn) +{ + return 0; +} +#endif + bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp) { @@ -970,7 +978,11 @@ static int bpf_check_tail_call(const struct bpf_prog *fp) */ struct bpf_prog *bpf_prog_select_runtime(struct bpf_prog *fp, int *err) { +#ifndef CONFIG_BPF_JIT_ALWAYS_ON fp->bpf_func = (void *) __bpf_prog_run; +#else + fp->bpf_func = (void *) __bpf_prog_ret0; +#endif /* eBPF JITs can rewrite the program in case constant * blinding is active. However, in case of error during @@ -979,6 +991,12 @@ struct bpf_prog *bpf_prog_select_runtime(struct bpf_prog *fp, int *err) * be JITed, but falls back to the interpreter. */ fp = bpf_int_jit_compile(fp); +#ifdef CONFIG_BPF_JIT_ALWAYS_ON + if (!fp->jited) { + *err = -ENOTSUPP; + return fp; + } +#endif bpf_prog_lock_ro(fp); /* The tail call compatibility check can only be done at |