[Intel-gfx] [PATCH v14 22/26] vfio: Add VFIO_DEVICE_BIND_IOMMUFD

[Liu, Yi L]

> From: Jason Gunthorpe <jgg at nvidia.com>
> Sent: Saturday, July 15, 2023 9:05 PM
> 
> On Sat, Jul 15, 2023 at 04:16:52AM +0000, Liu, Yi L wrote:
> > > From: Jason Gunthorpe <jgg at nvidia.com>
> > > Sent: Friday, July 14, 2023 10:42 PM
> > >
> > > On Mon, Jul 10, 2023 at 07:59:24PM -0700, Yi Liu wrote:
> > >
> > > > +static inline long vfio_df_ioctl_bind_iommufd(struct vfio_device_file *df,
> > > > +					      struct vfio_device_bind_iommufd __user
> > > *arg)
> > > > +{
> > > > +	return -EOPNOTSUPP;
> > > > +}
> > >
> > > This should be -ENOTTY
> >
> > Okay. Since there are quite a few stub functions in the drivers/vfio/vfio.h.
> > Let me check the rule. All the stub functions should return -ENOTTY in
> > the !IS_ENABLED(CONFIG_XXX) case, if the function returns int., is
> > it?
> 
> No, just ioctl returns ENOTTY, so really just this function.

Ok. I see.

Regards,
Yi Liu