On 04/06/2026 15:57, Fushuai Wang wrote:

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From: Fushuai Wang <redacted>

Hi all,

When an SF is created after a CPU has been taken offline, the IRQ affinity
check fails because existing IRQs in the pool may have affinity masks that
include the now-offline CPU. This causes SF creation to fail even though
suitable online CPUs are available.

This series fixes this issue and includes a small cleanup:

Patch 1 folds cpumask_copy() into cpumask_andnot() for better code clarity
in comp_irq_request_sf().

Patch 2 filters affinity masks to only consider effective CPUs before the
subset check, ensuring SF creation succeeds when CPUs have been taken offline.

Thanks for the patches.
two points:
1) you need to add branch name to the title (PATCH net ...)
2) you need to keep a change-log.

The first patch is net-next material, and the second patch is net.
I think it would be better to send each one separately to its own branch.
sorry didn't notice on prev review...

--WANG

Fushuai Wang (2):
   net/mlx5: Simplify cpumask operations in comp_irq_request_sf()
   net/mlx5: Use effective affinity mask for IRQ selection

  drivers/net/ethernet/mellanox/mlx5/core/eq.c           | 3 +--
  drivers/net/ethernet/mellanox/mlx5/core/irq_affinity.c | 5 ++++-
  2 files changed, 5 insertions(+), 3 deletions(-)

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2.36.1