mirror of
https://github.com/torvalds/linux.git
synced 2024-12-26 12:52:30 +00:00
e2c95a6165
Make fetching of the BPF call address from ppc64 JIT generic. ppc64 was using a slightly different variant rather than through the insns' imm field encoding as the target address would not fit into that space. Therefore, the target subprog number was encoded into the insns' offset and fetched through fp->aux->func[off]->bpf_func instead. Given there are other JITs with this issue and the mechanism of fetching the address is JIT-generic, move it into the core as a helper instead. On the JIT side, we get information on whether the retrieved address is a fixed one, that is, not changing through JIT passes, or a dynamic one. For the former, JITs can optimize their imm emission because this doesn't change jump offsets throughout JIT process. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Reviewed-by: Sandipan Das <sandipan@linux.ibm.com> Tested-by: Sandipan Das <sandipan@linux.ibm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> |
||
|---|---|---|
| .. | ||
| bpf_jit32.h | ||
| bpf_jit64.h | ||
| bpf_jit_asm.S | ||
| bpf_jit_comp64.c | ||
| bpf_jit_comp.c | ||
| bpf_jit.h | ||
| Makefile | ||