Re: [PATCH 8/9] vfio/pci: export nvlink2 support into vendor vfio_pci drivers

[Jason Gunthorpe]

On Wed, Mar 10, 2021 at 02:57:57PM +0200, Max Gurtovoy wrote:

> > > +    .err_handler        = &vfio_pci_core_err_handlers,
> > > +};
> > > +
> > > +#ifdef CONFIG_VFIO_PCI_DRIVER_COMPAT
> > > +struct pci_driver *get_nvlink2gpu_vfio_pci_driver(struct pci_dev *pdev)
> > > +{
> > > +    if (pci_match_id(nvlink2gpu_vfio_pci_driver.id_table, pdev))
> > > +        return &nvlink2gpu_vfio_pci_driver;
> > 
> > 
> > Why do we need matching PCI ids here instead of looking at the FDT which
> > will work better?
> 
> what is FDT ? any is it better to use it instead of match_id ?

This is emulating the device_driver match for the pci_driver.

I don't think we can combine FDT matching with pci_driver, can we?

Jason