linux-kernel - Re: [PATCH 2/2] vdpa/mlx5: Initialize CVQ iotlb spinlock

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Date:   Mon, 13 Feb 2023 07:19:11 -0500
From:   "Michael S. Tsirkin" <mst@...hat.com>
To:     Eli Cohen <elic@...dia.com>
Cc:     jasowang@...hat.com, si-wei.liu@...cle.com, eperezma@...hat.com,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] vdpa/mlx5: Initialize CVQ iotlb spinlock

On Mon, Feb 06, 2023 at 02:20:16PM +0200, Eli Cohen wrote:
> Initialize itolb spinlock.
> 
> Fixes: 5262912ef3cf ("vdpa/mlx5: Add support for control VQ and MAC setting")
> Signed-off-by: Eli Cohen <elic@...dia.com>

threading was broken here but whatevs.

> ---
>  drivers/vdpa/mlx5/core/resources.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/vdpa/mlx5/core/resources.c b/drivers/vdpa/mlx5/core/resources.c
> index 45ad41287a31..d5a59c9035fb 100644
> --- a/drivers/vdpa/mlx5/core/resources.c
> +++ b/drivers/vdpa/mlx5/core/resources.c
> @@ -233,6 +233,7 @@ static int init_ctrl_vq(struct mlx5_vdpa_dev *mvdev)
>  	if (!mvdev->cvq.iotlb)
>  		return -ENOMEM;
>  
> +	spin_lock_init(&mvdev->cvq.iommu_lock);
>  	vringh_set_iotlb(&mvdev->cvq.vring, mvdev->cvq.iotlb, &mvdev->cvq.iommu_lock);
>  
>  	return 0;
> -- 
> 2.38.1