RE: [RFC 5/8] vfio: IOMMUFD relax requirement for noiommu mode

[Tian, Kevin]

> From: Jacob Pan <jacob.pan@xxxxxxxxxxxxxxxxxxx>
> Sent: Tuesday, December 2, 2025 1:30 AM
> 
> noiommu device only has auto domain, does not need to attach to other ioas.
> 
> Signed-off-by: Jacob Pan <jacob.pan@xxxxxxxxxxxxxxxxxxx>
> ---
>  drivers/vfio/vfio_main.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/vfio/vfio_main.c b/drivers/vfio/vfio_main.c
> index 38c8e9350a60..805d30b0b82f 100644
> --- a/drivers/vfio/vfio_main.c
> +++ b/drivers/vfio/vfio_main.c
> @@ -317,9 +317,7 @@ static int __vfio_register_dev(struct vfio_device
> *device,
> 
>  	if (WARN_ON(IS_ENABLED(CONFIG_IOMMUFD) &&
>  		    (!device->ops->bind_iommufd ||
> -		     !device->ops->unbind_iommufd ||
> -		     !device->ops->attach_ioas ||
> -		     !device->ops->detach_ioas)))
> +		     !device->ops->unbind_iommufd)))
>  		return -EINVAL;
> 

the subject says to relax for noiommu, but above actually relax
the check for all configs...