On Tue, Jun 15, 2021 at 04:11:29PM +0200, Greg Kroah-Hartman wrote:

On Tue, Jun 15, 2021 at 03:35:16PM +0200, Christoph Hellwig wrote:

quoted

From: Jason Gunthorpe <jgg@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@nvidia.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

Messy, but ok...

Is there something you'd like to see changed, eg in later patches?
This whole work still has another approx 30 patches to go and much of
this ends up being erased once the drivers are all converted.

Jason