A 'DMB' is enough to evict the merge buffer on aarch64,when the doorbell
register is mapped as 'Normal-NC', the counterpart of WC on x86.
Otherwise, it is mapped as Device memory, no barriers required at all.
Signed-off-by: Gavin Hu <gavin...@arm.com>
---
drivers/net/mlx5/mlx5_rxtx.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/mlx5/mlx5_rxtx.h b/drivers/net/mlx5/mlx5_rxtx.h
index 939778aa5..e509f3b88 100644
--- a/drivers/net/mlx5/mlx5_rxtx.h
+++ b/drivers/net/mlx5/mlx5_rxtx.h
@@ -661,7 +661,7 @@ mlx5_tx_dbrec_cond_wmb(struct mlx5_txq_data *txq, volatile
struct mlx5_wqe *wqe,
rte_wmb();
mlx5_uar_write64_relaxed(*src, dst, txq->uar_lock);
if (cond)
- rte_wmb();
+ rte_dma_wmb();
}
/**
--
2.17.1
