Re: [PATCH RFC 01/12] vhost-vdpa: add support for vDPA blk devices

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On Fri, Nov 13, 2020 at 02:47:01PM +0100, Stefano Garzarella wrote:
> diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
> index 2754f3069738..fb0411594963 100644
> --- a/drivers/vhost/vdpa.c
> +++ b/drivers/vhost/vdpa.c
> @@ -22,6 +22,7 @@
>  #include <linux/nospec.h>
>  #include <linux/vhost.h>
>  #include <linux/virtio_net.h>
> +#include <linux/virtio_blk.h>
>  
>  #include "vhost.h"
>  
> @@ -194,6 +195,9 @@ static int vhost_vdpa_config_validate(struct vhost_vdpa *v,
>  	case VIRTIO_ID_NET:
>  		size = sizeof(struct virtio_net_config);
>  		break;
> +	case VIRTIO_ID_BLOCK:
> +		size = sizeof(struct virtio_blk_config);
> +		break;
>  	}
>  
>  	if (c->len == 0)

Can vdpa_config_ops->get/set_config() handle the size check instead of
hardcoding device-specific knowledge into drivers/vhost/vdpa.c?

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