On Mon, Jun 14 2021, Christoph Hellwig hch@lst.de wrote:

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

---

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: Cornelia Huck cohuck@redhat.com