[Intel-gfx] [PATCH 07/10] vfio/mdev: Allow the mdev_parent_ops to specify the device driver to bind

[Kirti Wankhede]

On 6/15/2021 7:05 PM, Christoph Hellwig wrote:
> From: Jason Gunthorpe <jgg at nvidia.com>
> 
> This allows a mdev driver to opt out of using vfio_mdev.c, instead the
> driver will provide a 'struct mdev_driver' and register directly with the
> driver core.
> 
> Much of mdev_parent_ops becomes unused in this mode:
> - create()/remove() are done via the mdev_driver probe()/remove()
> - mdev_attr_groups becomes mdev_driver driver.dev_groups
> - Wrapper function callbacks are replaced with the same ones from
>    struct vfio_device_ops
> 
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> ---
>   drivers/vfio/mdev/mdev_core.c   | 30 ++++++++++++++++++++++--------
>   drivers/vfio/mdev/mdev_driver.c | 10 ++++++++++
>   include/linux/mdev.h            |  2 ++
>   3 files changed, 34 insertions(+), 8 deletions(-)

Reviewed-by: Kirti Wankhede <kwankhede at nvidia.com>