linux/arch/x86/net
Daniel Borkmann 0869175220 bpf, x64: save 5 bytes in prologue when ebpf insns came from cbpf
While it's rather cumbersome to reduce prologue for cBPF->eBPF
migrations wrt spill/fill for r15 which is callee saved register
due to bpf_error path in bpf_jit.S that is both used by migrations
as well as native eBPF, we can still trivially save 5 bytes in
prologue for the former since tail calls can never be used there.
cBPF->eBPF migrations also have their own custom prologue in BPF
asm that xors A and X reg anyway, so it's fine we skip this here.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2018-02-23 22:50:00 -08:00
..
bpf_jit_comp.c bpf, x64: save 5 bytes in prologue when ebpf insns came from cbpf 2018-02-23 22:50:00 -08:00
bpf_jit.S bpf: change x86 JITed program stack layout 2017-05-31 19:29:48 -04:00
Makefile objtool, x86: Add several functions and files to the objtool whitelist 2017-06-30 10:19:19 +02:00