kernel/linux.git/Documentation/driver-api/vfio.rst, branch v6.19.11

vfio: remove an extra semicolon

2024-05-10T17:15:21+00:00

remove an extra semicolon from the example code Signed-off-by: foryun.ma Link: https://lore.kernel.org/r/20240510003735.2766-1-foryun.ma@jaguarmicro.com Signed-off-by: Alex Williamson

docs: vfio: Add vfio device cdev description

2023-07-25T16:20:54+00:00

This gives notes for userspace applications on device cdev usage. Reviewed-by: Kevin Tian Reviewed-by: Jason Gunthorpe Tested-by: Yanting Jiang Signed-off-by: Yi Liu Link: https://lore.kernel.org/r/20230718135551.6592-27-yi.l.liu@intel.com Signed-off-by: Alex Williamson

vfio-iommufd: Add detach_ioas support for physical VFIO devices

2023-07-25T16:19:12+00:00

This prepares for adding DETACH ioctl for physical VFIO devices. Reviewed-by: Kevin Tian Reviewed-by: Jason Gunthorpe Tested-by: Terrence Xu Tested-by: Nicolin Chen Tested-by: Matthew Rosato Tested-by: Yanting Jiang Tested-by: Shameer Kolothum Tested-by: Zhenzhong Duan Signed-off-by: Yi Liu Link: https://lore.kernel.org/r/20230718135551.6592-14-yi.l.liu@intel.com Signed-off-by: Alex Williamson

docs: vfio: fix header path

2023-03-14T17:31:57+00:00

The text points to a different header file, fix by changing the path to "uapi". Signed-off-by: Jiri Pirko Reviewed-by: Yi Liu Link: https://lore.kernel.org/r/20230310095857.985814-1-jiri@resnulli.us Signed-off-by: Jonathan Corbet

docs: vfio: Update vfio.rst per latest interfaces

2023-02-09T18:49:48+00:00

this imports the latest vfio_device_ops definition to vfio.rst. Signed-off-by: Yi Liu Reviewed-by: Kevin Tian Link: https://lore.kernel.org/r/20230209081210.141372-3-yi.l.liu@intel.com Signed-off-by: Alex Williamson

vfio: Introduce a vfio_uninit_group_dev() API call

2021-08-11T15:50:10+00:00

This pairs with vfio_init_group_dev() and allows undoing any state that is stored in the vfio_device unrelated to registration. Add appropriately placed calls to all the drivers. The following patch will use this to add pre-registration state for the device set. Signed-off-by: Max Gurtovoy Reviewed-by: Cornelia Huck Reviewed-by: Christoph Hellwig Signed-off-by: Jason Gunthorpe Link: https://lore.kernel.org/r/3-v4-9ea22c5e6afb+1adf-vfio_reflck_jgg@nvidia.com Signed-off-by: Alex Williamson

docs: vfio: fix typo

2021-05-05T16:20:33+00:00

Signed-off-by: Alyssa Ross Message-Id: <20210504210651.1316078-1-hi@alyssa.is> Signed-off-by: Alex Williamson

vfio: Remove device_data from the vfio bus driver API

2021-04-06T17:55:11+00:00

There are no longer any users, so it can go away. Everything is using container_of now. Reviewed-by: Christoph Hellwig Reviewed-by: Kevin Tian Reviewed-by: Cornelia Huck Reviewed-by: Max Gurtovoy Signed-off-by: Jason Gunthorpe Message-Id: <14-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com> Signed-off-by: Alex Williamson

vfio: Make vfio_device_ops pass a 'struct vfio_device ' instead of 'void '

2021-04-06T17:55:11+00:00

This is the standard kernel pattern, the ops associated with a struct get the struct pointer in for typesafety. The expected design is to use container_of to cleanly go from the subsystem level type to the driver level type without having any type erasure in a void *. Reviewed-by: Dan Williams Reviewed-by: Christoph Hellwig Reviewed-by: Cornelia Huck Signed-off-by: Jason Gunthorpe Message-Id: <12-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com> Signed-off-by: Alex Williamson

vfio: Split creation of a vfio_device into init and register ops

2021-04-06T17:55:10+00:00

This makes the struct vfio_device part of the public interface so it can be used with container_of and so forth, as is typical for a Linux subystem. This is the first step to bring some type-safety to the vfio interface by allowing the replacement of 'void *' and 'struct device *' inputs with a simple and clear 'struct vfio_device *' For now the self-allocating vfio_add_group_dev() interface is kept so each user can be updated as a separate patch. The expected usage pattern is driver core probe() function: my_device = kzalloc(sizeof(*mydevice)); vfio_init_group_dev(&my_device->vdev, dev, ops, mydevice); /* other driver specific prep */ vfio_register_group_dev(&my_device->vdev); dev_set_drvdata(dev, my_device); driver core remove() function: my_device = dev_get_drvdata(dev); vfio_unregister_group_dev(&my_device->vdev); /* other driver specific tear down */ kfree(my_device); Allowing the driver to be able to use the drvdata and vfio_device to go to/from its own data. The pattern also makes it clear that vfio_register_group_dev() must be last in the sequence, as once it is called the core code can immediately start calling ops. The init/register gap is provided to allow for the driver to do setup before ops can be called and thus avoid races. Reviewed-by: Christoph Hellwig Reviewed-by: Liu Yi L Reviewed-by: Cornelia Huck Reviewed-by: Max Gurtovoy Reviewed-by: Kevin Tian Reviewed-by: Eric Auger Signed-off-by: Jason Gunthorpe Message-Id: <3-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com> Signed-off-by: Alex Williamson

kernel/linux.git/Documentation/driver-api/vfio.rst, branch v6.19.11

vfio: remove an extra semicolon

docs: vfio: Add vfio device cdev description

vfio-iommufd: Add detach_ioas support for physical VFIO devices

docs: vfio: fix header path

docs: vfio: Update vfio.rst per latest interfaces

vfio: Introduce a vfio_uninit_group_dev() API call

docs: vfio: fix typo

vfio: Remove device_data from the vfio bus driver API

vfio: Make vfio_device_ops pass a 'struct vfio_device *' instead of 'void *'

vfio: Split creation of a vfio_device into init and register ops

vfio: Make vfio_device_ops pass a 'struct vfio_device ' instead of 'void '