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Date: Thu, 30 Nov 2017 21:32:53 -0800 From: Jakub Kicinski <jakub.kicinski@...ronome.com> To: netdev@...r.kernel.org Cc: oss-drivers@...ronome.com, Jiong Wang <jiong.wang@...ronome.com> Subject: [PATCH net-next 06/13] nfp: bpf: don't do ld/shifts combination if shifts are jump destination From: Jiong Wang <jiong.wang@...ronome.com> If any of the shift insns in the ld/shift sequence is jump destination, don't do combination. Signed-off-by: Jiong Wang <jiong.wang@...ronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@...ronome.com> --- drivers/net/ethernet/netronome/nfp/bpf/jit.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/netronome/nfp/bpf/jit.c b/drivers/net/ethernet/netronome/nfp/bpf/jit.c index f2317b764222..54915a3b8a7e 100644 --- a/drivers/net/ethernet/netronome/nfp/bpf/jit.c +++ b/drivers/net/ethernet/netronome/nfp/bpf/jit.c @@ -2181,6 +2181,10 @@ static void nfp_bpf_opt_ld_shift(struct nfp_prog *nfp_prog) if (next1.imm != 0x20 || next2.imm != 0x20) continue; + if (meta2->flags & FLAG_INSN_IS_JUMP_DST || + meta3->flags & FLAG_INSN_IS_JUMP_DST) + continue; + meta2->skip = true; meta3->skip = true; } -- 2.15.0
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