Thread (8 messages) 8 messages, 3 authors, 2026-05-04
STALE72d
Revisions (2)
  1. v1 current
  2. v2 [diff vs current]

[PATCH net-next 0/3] net/mlx5: ICM page management in VHCA_ID mode

From: Tariq Toukan <tariqt@nvidia.com>
Date: 2026-05-01 04:42:24
Also in: linux-rdma, lkml

Hi,

Find detailed description by Moshe below.

Regards,
Tariq

This series adds driver support for the VHCA_ID page management mode.
When firmware and driver support this mode, ICM (Interconnect Context
Memory) page management uses the device vhca_id as the function
identifier in MANAGE_PAGES, QUERY_PAGES, and page request events instead
of the legacy function_id + ec_function pair.

Background
Firmware can operate page management in two modes:
FUNC_ID mode (current): Function identity is (function_id, ec_function).
This remains the default and is used for boot pages and when the new
mode capability is not set.
VHCA_ID mode (new): Function identity is vhca_id only; ec_function is
ignored. This aligns page management with the vhca_id-based model used
by other firmware commands and simplifies identification on SmartNIC and
multi-function setups.


Moshe Shemesh (3):
  net/mlx5: Relax capability check for eswitch query paths
  net/mlx5: Make debugfs page counters by function type dynamic
  net/mlx5: Add VHCA_ID page management mode support

 .../net/ethernet/mellanox/mlx5/core/debugfs.c |  39 ++-
 .../ethernet/mellanox/mlx5/core/esw/ipsec.c   |   2 +-
 .../net/ethernet/mellanox/mlx5/core/eswitch.c |  48 +++-
 .../net/ethernet/mellanox/mlx5/core/eswitch.h |   7 +
 .../mellanox/mlx5/core/eswitch_offloads.c     |  14 +-
 .../net/ethernet/mellanox/mlx5/core/main.c    |  10 +-
 .../ethernet/mellanox/mlx5/core/pagealloc.c   | 226 ++++++++++++++----
 include/linux/mlx5/driver.h                   |   9 +
 8 files changed, 289 insertions(+), 66 deletions(-)


base-commit: 4e37987362bcac8909f2d4b4458f3aa645e41641
-- 
2.44.0
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