_R30
instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
instrs[i++] = PPC_RAW_ORI(_R30, _R30, 0); /* L1d flush */
ctx->b2p[BPF_REG_9] = _R30;
ctx->b2p[BPF_REG_9] = _R30;