netdev - Re: [PATCH 3/5] vdpa/mlx5: Retrieve BAR address suitable any function

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Date:   Thu, 8 Apr 2021 17:45:22 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Eli Cohen <elic@...dia.com>, mst@...hat.com, parav@...dia.com,
        si-wei.liu@...cle.com, virtualization@...ts.linux-foundation.org,
        netdev@...r.kernel.org
Cc:     stable@...r.kernel.org
Subject: Re: [PATCH 3/5] vdpa/mlx5: Retrieve BAR address suitable any function


在 2021/4/8 下午5:10, Eli Cohen 写道:
> struct mlx5_core_dev has a bar_addr field that contains the correct bar
> address for the function regardless of whether it is pci function or sub
> function. Use it.
>
> Fixes: 1958fc2f0712 ("net/mlx5: SF, Add auxiliary device driver")
> Signed-off-by: Eli Cohen <elic@...dia.com>
> Reviewed-by: Parav Pandit <parav@...dia.com>


Acked-by: Jason Wang <jasowang@...hat.com>


> ---
>   drivers/vdpa/mlx5/core/resources.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/vdpa/mlx5/core/resources.c b/drivers/vdpa/mlx5/core/resources.c
> index 96e6421c5d1c..6521cbd0f5c2 100644
> --- a/drivers/vdpa/mlx5/core/resources.c
> +++ b/drivers/vdpa/mlx5/core/resources.c
> @@ -246,7 +246,8 @@ int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev)
>   	if (err)
>   		goto err_key;
>   
> -	kick_addr = pci_resource_start(mdev->pdev, 0) + offset;
> +	kick_addr = mdev->bar_addr + offset;
> +
>   	res->kick_addr = ioremap(kick_addr, PAGE_SIZE);
>   	if (!res->kick_addr) {
>   		err = -ENOMEM;