diff options
| author |   Ilya Leoshkevich <iii@linux.ibm.com> | 2019-11-18 19:03:40 +0100 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2019-11-18 19:51:16 -0800 |
| commit | d1242b10ff03a40ae095e6dd54aac4a6f0f547d5 (patch) | |
| tree | eac6b55040cf06b2d4e3c2fb1836e019ceaf70d5 | |
| parent | s390/bpf: Use lg(f)rl when long displacement cannot be used (diff) | |
| download | linux-dev-d1242b10ff03a40ae095e6dd54aac4a6f0f547d5.tar.xz linux-dev-d1242b10ff03a40ae095e6dd54aac4a6f0f547d5.zip | |
s390/bpf: Remove JITed image size limitations
Now that jump and long displacement ranges are no longer a problem,
remove the limit on JITed image size. In practice it's still limited by
2G, but with verifier allowing "only" 1M instructions, it's not an
issue.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20191118180340.68373-7-iii@linux.ibm.com
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index 3398cd939496..8d2134136290 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -52,8 +52,6 @@ struct bpf_jit { int labels[1]; /* Labels for local jumps */ }; -#define BPF_SIZE_MAX 0xffff /* Max size for program (16 bit branches) */ - #define SEEN_MEM BIT(0) /* use mem[] for temporary storage */ #define SEEN_LITERAL BIT(1) /* code uses literals */ #define SEEN_FUNC BIT(2) /* calls C functions */ @@ -1631,11 +1629,6 @@ struct bpf_prog *bpf_int_jit_compile(struct bpf_prog *fp) /* * Final pass: Allocate and generate program */ - if (jit.size >= BPF_SIZE_MAX) { - fp = orig_fp; - goto free_addrs; - } - header = bpf_jit_binary_alloc(jit.size, &jit.prg_buf, 8, jit_fill_hole); if (!header) { fp = orig_fp; |