Daniel Borkmann 959a757916 bpf, x86: add support for constant blinding ... This patch adds recently added constant blinding helpers into the x86 eBPF JIT. In the bpf_int_jit_compile() path, requirements are to utilize bpf_jit_blind_constants()/bpf_jit_prog_release_other() pair for rewriting the program into a blinded one, and to map the BPF_REG_AX register to a CPU register. The mapping of BPF_REG_AX is at non-callee saved register r10, and thus shared with cached skb->data used for ld_abs/ind and not in every program type needed. When blinding is not used, there's zero additional overhead in the generated image. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-05-16 13:49:32 -04:00
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bpf_jit_comp.c	bpf, x86: add support for constant blinding	2016-05-16 13:49:32 -04:00
bpf_jit.S	x86/asm/bpf: Create stack frames in bpf_jit.S	2016-02-24 08:35:44 +01:00
Makefile