netdev - Re: [PATCH] vhost: drop vring dependency on iotlb

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Message-ID: <afe230b9-708f-02a1-c3af-51e9d4fdd212@redhat.com>
Date:   Thu, 2 Apr 2020 22:28:28 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>, linux-kernel@...r.kernel.org
Cc:     virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH] vhost: drop vring dependency on iotlb


On 2020/4/2 下午10:12, Michael S. Tsirkin wrote:
> vringh can now be built without IOTLB.
> Select IOTLB directly where it's used.
>
> Signed-off-by: Michael S. Tsirkin <mst@...hat.com>
> ---
>
> This is on top of my previous patch (in vhost tree now).
>
>   drivers/vdpa/Kconfig  | 1 +
>   drivers/vhost/Kconfig | 1 -
>   2 files changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/vdpa/Kconfig b/drivers/vdpa/Kconfig
> index 7db1460104b7..08b615f2da39 100644
> --- a/drivers/vdpa/Kconfig
> +++ b/drivers/vdpa/Kconfig
> @@ -17,6 +17,7 @@ config VDPA_SIM
>   	depends on RUNTIME_TESTING_MENU
>   	select VDPA
>   	select VHOST_RING
> +	select VHOST_IOTLB
>   	default n
>   	help
>   	  vDPA networking device simulator which loop TX traffic back
> diff --git a/drivers/vhost/Kconfig b/drivers/vhost/Kconfig
> index 21feea0d69c9..bdd270fede26 100644
> --- a/drivers/vhost/Kconfig
> +++ b/drivers/vhost/Kconfig
> @@ -6,7 +6,6 @@ config VHOST_IOTLB
>   
>   config VHOST_RING
>   	tristate
> -	select VHOST_IOTLB
>   	help
>   	  This option is selected by any driver which needs to access
>   	  the host side of a virtio ring.


Do we need to mention driver need to select VHOST_IOTLB by itself here?

Thanks