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| author | Daniel Borkmann <daniel@iogearbox.net> | 2018-01-26 23:33:42 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2018-01-26 16:42:06 -0800 |
| commit | a3212b8f15d88619520c2f9e98683e56ad3a649e (patch) | |
| tree | 46429c5943800cadafd0e8a1c21d1a05bf9edbf2 /arch | |
| parent | 96a71005bdcbbcf01abe50e2965bbcd1aee6a1e5 (diff) | |
| download | op-kernel-dev-a3212b8f15d88619520c2f9e98683e56ad3a649e.zip op-kernel-dev-a3212b8f15d88619520c2f9e98683e56ad3a649e.tar.gz | |
bpf, s390x: remove obsolete exception handling from div/mod
Since we've changed div/mod exception handling for src_reg in
eBPF verifier itself, remove the leftovers from s390x JIT.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/net/bpf_jit_comp.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/arch/s390/net/bpf_jit_comp.c b/arch/s390/net/bpf_jit_comp.c index e501887..78a19c9 100644 --- a/arch/s390/net/bpf_jit_comp.c +++ b/arch/s390/net/bpf_jit_comp.c @@ -610,11 +610,6 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i { int rc_reg = BPF_OP(insn->code) == BPF_DIV ? REG_W1 : REG_W0; - jit->seen |= SEEN_RET0; - /* ltr %src,%src (if src == 0 goto fail) */ - EMIT2(0x1200, src_reg, src_reg); - /* jz <ret0> */ - EMIT4_PCREL(0xa7840000, jit->ret0_ip - jit->prg); /* lhi %w0,0 */ EMIT4_IMM(0xa7080000, REG_W0, 0); /* lr %w1,%dst */ @@ -630,11 +625,6 @@ static noinline int bpf_jit_insn(struct bpf_jit *jit, struct bpf_prog *fp, int i { int rc_reg = BPF_OP(insn->code) == BPF_DIV ? REG_W1 : REG_W0; - jit->seen |= SEEN_RET0; - /* ltgr %src,%src (if src == 0 goto fail) */ - EMIT4(0xb9020000, src_reg, src_reg); - /* jz <ret0> */ - EMIT4_PCREL(0xa7840000, jit->ret0_ip - jit->prg); /* lghi %w0,0 */ EMIT4_IMM(0xa7090000, REG_W0, 0); /* lgr %w1,%dst */ |
