RE: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *'... | linux-doc

[PATCH 00/10] Embed struct vfio_device in all sub-structures · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-09
[PATCH 02/10] vfio: Split creation of a vfio_device into init and register ops · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-09
Re: [PATCH 02/10] vfio: Split creation of a vfio_device into init and register ops · Christoph Hellwig <hch@lst.de> · 2021-03-10
RE: [PATCH 02/10] vfio: Split creation of a vfio_device into init and register ops · Liu, Yi L <hidden> · 2021-03-12
Re: [PATCH 02/10] vfio: Split creation of a vfio_device into init and register ops · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-12
Re: [PATCH 02/10] vfio: Split creation of a vfio_device into init and register ops · Christoph Hellwig <hch@lst.de> · 2021-03-12
[PATCH 10/10] vfio: Remove device_data from the vfio bus driver API · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-09
Re: [PATCH 10/10] vfio: Remove device_data from the vfio bus driver API · Christoph Hellwig <hch@lst.de> · 2021-03-10
[PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-09
Re: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Dan Williams <hidden> · 2021-03-10
Re: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Leon Romanovsky <leon@kernel.org> · 2021-03-10
Re: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-10
Re: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Dan Williams <hidden> · 2021-03-10
RE: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Liu, Yi L <hidden> · 2021-03-12
Re: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *' · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-12
Re: [PATCH 00/10] Embed struct vfio_device in all sub-structures · Alex Williamson <hidden> · 2021-03-10
Re: [PATCH 00/10] Embed struct vfio_device in all sub-structures · Jason Gunthorpe <jgg@nvidia.com> · 2021-03-10

RE: [PATCH 08/10] vfio: Make vfio_device_ops pass a 'struct vfio_device ' instead of 'void '

From: Liu, Yi L <hidden>
Date: 2021-03-12 13:43:40
Also in: kvm

Hi Jason,

From: Jason Gunthorpe <jgg@nvidia.com>
Sent: Wednesday, March 10, 2021 5:39 AM

[...]

-Each function is passed the device_data that was originally registered
+Each function is passed the vdev that was originally registered
 in the vfio_register_group_dev() call above.  This allows the bus driver
-an easy place to store its opaque, private data.  The open/release
+to obtain its private data using container_of().  The open/release

I think the is to let VFIO device drivers (e.g. vfio_pci driver) to obtain
its private data by using container_of instead of let the bus driver.
right?

Regards,
Yi Liu

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