This is a note to let you know that I've just added the patch titled

mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...

The filename of the patch is: mlx5-fix-mlx5_get_vector_affinity-to-start-from-completion-vector-0.patch and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.

From 2572cf57d75a7f91835d9a38771e9e76d575d122 Mon Sep 17 00:00:00 2001

From: Sagi Grimberg sagi@grimberg.me Date: Mon, 5 Feb 2018 16:24:52 +0200 Subject: mlx5: fix mlx5_get_vector_affinity to start from completion vector 0

From: Sagi Grimberg sagi@grimberg.me

commit 2572cf57d75a7f91835d9a38771e9e76d575d122 upstream.

The consumers of this routine expects the affinity map of of vector index relative to the first completion vector. The upper layers are not aware of internal/private completion vectors that mlx5 allocates for its own usage.

Hence, return the affinity map of vector index relative to the first completion vector.

Fixes: 05e0cc84e00c ("net/mlx5: Fix get vector affinity helper function") Reported-by: Logan Gunthorpe logang@deltatee.com Tested-by: Max Gurtovoy maxg@mellanox.com Reviewed-by: Max Gurtovoy maxg@mellanox.com Cc: stable@vger.kernel.org # v4.15 Signed-off-by: Sagi Grimberg sagi@grimberg.me Signed-off-by: Doug Ledford dledford@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

--- include/linux/mlx5/driver.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -1201,7 +1201,7 @@ mlx5_get_vector_affinity(struct mlx5_cor int eqn; int err;

- err = mlx5_vector2eqn(dev, vector, &eqn, &irq); + err = mlx5_vector2eqn(dev, MLX5_EQ_VEC_COMP_BASE + vector, &eqn, &irq); if (err) return NULL;

Patches currently in stable-queue which might be from sagi@grimberg.me are

queue-4.14/mlx5-fix-mlx5_get_vector_affinity-to-start-from-completion-vector-0.patch