Daniel Borkmann 606c88a86c bpf, x86: detect/optimize loading 0 immediates ... When sometimes structs or variables need to be initialized/'memset' to 0 in an eBPF C program, the x86 BPF JIT converts this to use immediates. We can however save a couple of bytes (f.e. even up to 7 bytes on a single emmission of BPF_LD | BPF_IMM | BPF_DW) in the image by detecting such case and use xor on the dst register instead. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-12-18 16:04:51 -05:00
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bpf_jit.S	x86/debug: Remove perpetually broken, unmaintainable dwarf annotations	2015-06-02 07:57:48 +02:00
bpf_jit_comp.c	bpf, x86: detect/optimize loading 0 immediates	2015-12-18 16:04:51 -05:00
Makefile	net: filter: Just In Time compiler for x86-64	2011-04-27 23:05:08 -07:00