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| author | Daniel Borkmann <daniel@iogearbox.net> | 2019-11-22 21:07:54 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2019-11-24 16:58:47 -0800 |
| commit | 4b3da77b72ad6b3c48c6fe4a395ace7db39a12c5 (patch) | |
| tree | 3c65c1076f917574a67c3ee1c4de18364549bebc /kernel/bpf/core.c | |
| parent | c4781e37c6a22c39cb4a57411d14f42aca124f04 (diff) | |
| download | linux-4b3da77b72ad6b3c48c6fe4a395ace7db39a12c5.tar.gz linux-4b3da77b72ad6b3c48c6fe4a395ace7db39a12c5.tar.bz2 linux-4b3da77b72ad6b3c48c6fe4a395ace7db39a12c5.zip | |
bpf, x86: Generalize and extend bpf_arch_text_poke for direct jumps
Add BPF_MOD_{NOP_TO_JUMP,JUMP_TO_JUMP,JUMP_TO_NOP} patching for x86
JIT in order to be able to patch direct jumps or nop them out. We need
this facility in order to patch tail call jumps and in later work also
BPF static keys.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/aa4784196a8e5e985af4b30a4fe5336bce6e9643.1574452833.git.daniel@iogearbox.net
Diffstat (limited to 'kernel/bpf/core.c')
0 files changed, 0 insertions, 0 deletions