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Commit 91828bd8 authored by Majd Dibbiny's avatar Majd Dibbiny Committed by Saeed Mahameed
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net/mlx5: Enable 4K UAR only when page size is bigger than 4K 



When the page size isn't bigger than 4K, there is no added value of enabling 4K
UAR feature in the Firmware.

Modified the condition of enabling the 4K UAR accordingly.

Fixes: f502d834 ("net/mlx5: Activate support for 4K UARs")
Signed-off-by: default avatarMajd Dibbiny <majd@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent 53acd76c

drivers/net/ethernet/mellanox/mlx5/core/main.c

+4 −2
Original line number Diff line number Diff line
@@ -537,8 +537,10 @@ static int handle_hca_cap(struct mlx5_core_dev *dev) 
	/* disable cmdif checksum */

	MLX5_SET(cmd_hca_cap, set_hca_cap, cmdif_checksum, 0);



	/* If the HCA supports 4K UARs use it */

	if (MLX5_CAP_GEN_MAX(dev, uar_4k))

	/* Enable 4K UAR only when HCA supports it and page size is bigger

	 * than 4K.

	 */

	if (MLX5_CAP_GEN_MAX(dev, uar_4k) && PAGE_SIZE > 4096)

		MLX5_SET(cmd_hca_cap, set_hca_cap, uar_4k, 1);



	MLX5_SET(cmd_hca_cap, set_hca_cap, log_uar_page_sz, PAGE_SHIFT - 12);