diff options
Diffstat (limited to 'drivers/net/mlx5/mlx5_rxtx_vec.h')
| -rw-r--r-- | drivers/net/mlx5/mlx5_rxtx_vec.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/drivers/net/mlx5/mlx5_rxtx_vec.h b/drivers/net/mlx5/mlx5_rxtx_vec.h index fda7004e..86735044 100644 --- a/drivers/net/mlx5/mlx5_rxtx_vec.h +++ b/drivers/net/mlx5/mlx5_rxtx_vec.h @@ -102,7 +102,22 @@ mlx5_rx_replenish_bulk_mbuf(struct mlx5_rxq_data *rxq, uint16_t n) return; } for (i = 0; i < n; ++i) { - wq[i].addr = rte_cpu_to_be_64((uintptr_t)elts[i]->buf_addr + + void *buf_addr; + + /* + * Load the virtual address for Rx WQE. non-x86 processors + * (mostly RISC such as ARM and Power) are more vulnerable to + * load stall. For x86, reducing the number of instructions + * seems to matter most. + */ +#ifdef RTE_ARCH_X86_64 + buf_addr = elts[i]->buf_addr; +#else + buf_addr = (char *)elts[i] + sizeof(struct rte_mbuf) + + rte_pktmbuf_priv_size(rxq->mp); + assert(buf_addr == elts[i]->buf_addr); +#endif + wq[i].addr = rte_cpu_to_be_64((uintptr_t)buf_addr + RTE_PKTMBUF_HEADROOM); /* If there's only one MR, no need to replace LKey in WQE. */ if (unlikely(mlx5_mr_btree_len(&rxq->mr_ctrl.cache_bh) > 1)) |