[RFC 5/5] RDMA/mlx5: Enabling ATS for ODP memory

[Yonatan Maman <ymaman@nvidia.com>]

From: Yonatan Maman <Ymaman@Nvidia.com>

ATS (Address Translation Services) mainly utilized to optimize PCI
Peer-to-Peer transfers and prevent bus failures. This change employed
ATS usage for ODP memory, to optimize DMA P2P for ODP memory. (e.g DMA
P2P for private device pages - ODP memory).

Signed-off-by: Yonatan Maman <Ymaman@Nvidia.com>
Signed-off-by: Gal Shalom <GalShalom@Nvidia.com>
---
 drivers/infiniband/hw/mlx5/mlx5_ib.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 1bae5595c729..702d155f5048 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1705,9 +1705,9 @@ static inline bool rt_supported(int ts_cap)
 static inline bool mlx5_umem_needs_ats(struct mlx5_ib_dev *dev,
 				       struct ib_umem *umem, int access_flags)
 {
-	if (!MLX5_CAP_GEN(dev->mdev, ats) || !umem->is_dmabuf)
-		return false;
-	return access_flags & IB_ACCESS_RELAXED_ORDERING;
+	if (MLX5_CAP_GEN(dev->mdev, ats) && (umem->is_dmabuf || umem->is_odp))
+		return access_flags & IB_ACCESS_RELAXED_ORDERING;
+	return false;
 }
 
 int set_roce_addr(struct mlx5_ib_dev *dev, u32 port_num,
-- 
2.34.1