[PATCH 3/8] vfio: add external user support

Stephen Rothwell sfr at canb.auug.org.au
Thu Jun 27 16:47:52 EST 2013


Hi Alexy,

On Thu, 27 Jun 2013 15:02:31 +1000 Alexey Kardashevskiy <aik at ozlabs.ru> wrote:
>
> index c488da5..54192b2 100644
> --- a/drivers/vfio/vfio.c
> +++ b/drivers/vfio/vfio.c
> @@ -1370,6 +1370,59 @@ static const struct file_operations vfio_device_fops = {
>  };
>  
>  /**
> + * External user API, exported by symbols to be linked dynamically.
> + */
> +
> +/* Allows an external user (for example, KVM) to lock an IOMMU group */
> +static int vfio_group_add_external_user(struct file *filep)
> +{
> +	struct vfio_group *group = filep->private_data;
> +
> +	if (filep->f_op != &vfio_group_fops)
> +		return -EINVAL;
> +
> +	if (!atomic_inc_not_zero(&group->container_users))
> +		return -EINVAL;
> +
> +	return 0;
> +}
> +EXPORT_SYMBOL_GPL(vfio_group_add_external_user);

You cannot EXPORT a static symbol ... The same through the rest of the
file.

-- 
Cheers,
Stephen Rothwell                    sfr at canb.auug.org.au
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