[PATCH rdma-next 08/15] net/mlx5: Enable relaxed ordering on resource dump mkey
From: Michael Gur <hidden>
Date: 2026-07-26 09:30:51
Also in:
linux-rdma, lkml
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
As resource dump logic reads data only following an event that is delivered with strong ordering, there is no need for strong ordering of its memory accesses. Add relaxed ordering access flag to its registered memory, thus allowing better performance and allowing resource dump on HW that restricts strong ordering. Reviewed-by: Yishai Hadas <yishaih@nvidia.com> Signed-off-by: Michael Gur <redacted> --- drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.c b/drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.c
index e770088de129..7b7ff08bd8bd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/diag/rsc_dump.c@@ -236,6 +236,7 @@ static int mlx5_rsc_dump_create_mkey(struct mlx5_core_dev *mdev, u32 pdn, MLX5_SET(mkc, mkc, access_mode_1_0, MLX5_MKC_ACCESS_MODE_PA); MLX5_SET(mkc, mkc, lw, 1); MLX5_SET(mkc, mkc, lr, 1); + mlx5_core_mkey_set_relaxed_ordering(mdev, mkc); MLX5_SET(mkc, mkc, pd, pdn); MLX5_SET(mkc, mkc, length64, 1);
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2.52.0