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Patch "IB/mlx4: Fix the SQ size of an RC QP" has been added to the 3.14-stable tree

PATCH [email protected] 1 participant 1 message Aug 18, 2016

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

IB/mlx4: Fix the SQ size of an RC QP

to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:

     ib-mlx4-fix-the-sq-size-of-an-rc-qp.patch

and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

Quoted 1 line

From f2940e2c76bb554a7fbdd28ca5b90904117a9e96 Mon Sep 17 00:00:00 2001

From: Yishai Hadas <[email protected]>
Date: Wed, 22 Jun 2016 17:27:28 +0300
Subject: IB/mlx4: Fix the SQ size of an RC QP

From: Yishai Hadas <[email protected]>

commit f2940e2c76bb554a7fbdd28ca5b90904117a9e96 upstream.

When calculating the required size of an RC QP send queue, leave enough space for masked atomic operations, which require more space than "regular" atomic operation.

Fixes 6fa8f719844b ("IB/mlx4: Add support for masked atomic operations")
---
 drivers/infiniband/hw/mlx4/qp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/infiniband/hw/mlx4/qp.c +1 -1
@@ -361,7 +361,7 @@ static int send_wqe_overhead(enum mlx4_i
 			sizeof (struct mlx4_wqe_raddr_seg);
 	case MLX4_IB_QPT_RC:
 		return sizeof (struct mlx4_wqe_ctrl_seg) +
-			sizeof (struct mlx4_wqe_atomic_seg) +
+			sizeof (struct mlx4_wqe_masked_atomic_seg) +
 			sizeof (struct mlx4_wqe_raddr_seg);
 	case MLX4_IB_QPT_SMI:
 	case MLX4_IB_QPT_GSI:

Patches currently in stable-queue which might be from [email protected] are

queue-3.14/ib-mlx4-fix-the-sq-size-of-an-rc-qp.patch