Re: [PATCH v11 3/3] vhost: Add configuration controls for vhost worker's mode

[Jason Wang]

On Mon, Jun 9, 2025 at 3:34 PM Cindy Lu <lulu@xxxxxxxxxx> wrote:
>
> This patch introduces functionality to control the vhost worker mode:
>
> - Add two new IOCTLs:
>   * VHOST_SET_FORK_FROM_OWNER: Allows userspace to select between
>     task mode (fork_owner=1) and kthread mode (fork_owner=0)
>   * VHOST_GET_FORK_FROM_OWNER: Retrieves the current thread mode
>     setting
>
> - Expose module parameter 'fork_from_owner_default' to allow system
>   administrators to configure the default mode for vhost workers
>
> - Add KConfig option CONFIG_VHOST_ENABLE_FORK_OWNER_CONTROL to
>   control the availability of these IOCTLs and parameter, allowing
>   distributions to disable them if not needed
>
> - The VHOST_NEW_WORKER functionality requires fork_owner to be set
>   to true, with validation added to ensure proper configuration
>
> Signed-off-by: Cindy Lu <lulu@xxxxxxxxxx>

Acked-by: Jason Wang <jasowang@xxxxxxxxxx>

Thanks