diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2021-10-06 01:55:28 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-10-07 19:52:59 +1100 |
| commit | 48164fccdff6d5cc11308126c050bd25a329df25 (patch) | |
| tree | c52e0477d2d3174ba641cc19c55178fd8dbc9208 | |
| parent | e8278d44443207bb6609c7b064073f353e6f4978 (diff) | |
powerpc/bpf ppc32: Do not emit zero extend instruction for 64-bit BPF_END
Suppress emitting zero extend instruction for 64-bit BPF_END_FROM_[L|B]E
operation.
Fixes: 51c66ad849a703 ("powerpc/bpf: Implement extended BPF on PPC32")
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/b4e3c3546121315a8e2059b19a1bda84971816e4.1633464148.git.naveen.n.rao@linux.vnet.ibm.com
| -rw-r--r-- | arch/powerpc/net/bpf_jit_comp32.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/net/bpf_jit_comp32.c b/arch/powerpc/net/bpf_jit_comp32.c index 7c65de9ed4fa..68dc8a8231de 100644 --- a/arch/powerpc/net/bpf_jit_comp32.c +++ b/arch/powerpc/net/bpf_jit_comp32.c @@ -1107,7 +1107,7 @@ cond_branch: return -EOPNOTSUPP; } if (BPF_CLASS(code) == BPF_ALU && !fp->aux->verifier_zext && - !insn_is_zext(&insn[i + 1])) + !insn_is_zext(&insn[i + 1]) && !(BPF_OP(code) == BPF_END && imm == 64)) EMIT(PPC_RAW_LI(dst_reg_h, 0)); } |