Here just skip the opcode(BPF_ST | BPF_NOSPEC) that has no couterpart to the loongarch. To verify, use ltp testcase: Without this patch: $ ./bpf_prog02 ... ... bpf_common.c:123: TBROK: Failed verification: ??? (524) Summary: passed 0 failed 0 broken 1 skipped 0 warnings 0 With this patch: $ ./bpf_prog02 ... ... Summary: passed 0 failed 0 broken 0 skipped 0 warnings 0 Signed-off-by: George Guo <guodongtai@xxxxxxxxxx> --- Changelog: v2: - place it to build_insn - add printing for skipping bpf_jit the opcode --- arch/loongarch/net/bpf_jit.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/loongarch/net/bpf_jit.c b/arch/loongarch/net/bpf_jit.c index 288003a9f0ca..d3c6b1c4ccbb 100644 --- a/arch/loongarch/net/bpf_jit.c +++ b/arch/loongarch/net/bpf_jit.c @@ -1022,6 +1022,11 @@ static int build_insn(const struct bpf_insn *insn, struct jit_ctx *ctx, bool ext emit_atomic(insn, ctx); break; + /* Speculation barrier */ + case BPF_ST | BPF_NOSPEC: + pr_info_once("bpf_jit: skip speculation barrier opcode %0x2x\n", code); + break; + default: pr_err("bpf_jit: unknown opcode %02x\n", code); return -EINVAL; -- 2.34.1