netdev - [PATCH mlx5-next 1/4] net/mlx5: Expose HCA capability bits for mkey max page size

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Message-ID: <3e4d3fda37934430f65f72601519e22bf396fd05.1751979184.git.leon@kernel.org>
Date: Wed,  9 Jul 2025 09:42:08 +0300
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...dia.com>
Cc: Michael Guralnik <michaelgur@...dia.com>,
	linux-rdma@...r.kernel.org,
	netdev@...r.kernel.org,
	Saeed Mahameed <saeedm@...dia.com>,
	Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH mlx5-next 1/4] net/mlx5: Expose HCA capability bits for mkey max page size

From: Michael Guralnik <michaelgur@...dia.com>

Expose the HCA capability for maximal page size that can be configured
for an mkey. Used for enforcing capabilities when working with highly
contiguous memory and using large page sizes.

Signed-off-by: Michael Guralnik <michaelgur@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 include/linux/mlx5/mlx5_ifc.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 5bb124b8024c..789a1f0a6739 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -2173,7 +2173,9 @@ struct mlx5_ifc_cmd_hca_cap_2_bits {
 	u8	   min_mkey_log_entity_size_fixed_buffer[0x5];
 	u8	   ec_vf_vport_base[0x10];
 
-	u8	   reserved_at_3a0[0xa];
+	u8	   reserved_at_3a0[0x2];
+	u8	   max_mkey_log_entity_size_fixed_buffer[0x6];
+	u8	   reserved_at_3a8[0x2];
 	u8	   max_mkey_log_entity_size_mtt[0x6];
 	u8	   max_rqt_vhca_id[0x10];
 
-- 
2.50.0