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| author | Yi Liu <yi.l.liu@intel.com> | 2023-07-18 06:55:38 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-07-25 10:19:12 -0600 |
| commit | 9048c7341c4df9cae04c154a8b0f556dbe913358 (patch) | |
| tree | c89395b813c0c5b6afc64587064f9a87393d3b41 /Documentation/driver-api | |
| parent | 31014aef9e4cc0326b5df0c3149e757a2b490176 (diff) | |
| download | linux-9048c7341c4df9cae04c154a8b0f556dbe913358.tar.gz | |
vfio-iommufd: Add detach_ioas support for physical VFIO devices
This prepares for adding DETACH ioctl for physical VFIO devices.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Tested-by: Yanting Jiang <yanting.jiang@intel.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20230718135551.6592-14-yi.l.liu@intel.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'Documentation/driver-api')
| -rw-r--r-- | Documentation/driver-api/vfio.rst | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/driver-api/vfio.rst b/Documentation/driver-api/vfio.rst index 68abc089d6ddd1..363e12c90b87d5 100644 --- a/Documentation/driver-api/vfio.rst +++ b/Documentation/driver-api/vfio.rst @@ -279,6 +279,7 @@ similar to a file operations structure:: struct iommufd_ctx *ictx, u32 *out_device_id); void (*unbind_iommufd)(struct vfio_device *vdev); int (*attach_ioas)(struct vfio_device *vdev, u32 *pt_id); + void (*detach_ioas)(struct vfio_device *vdev); int (*open_device)(struct vfio_device *vdev); void (*close_device)(struct vfio_device *vdev); ssize_t (*read)(struct vfio_device *vdev, char __user *buf, @@ -315,9 +316,10 @@ container_of(). - The [un]bind_iommufd callbacks are issued when the device is bound to and unbound from iommufd. - - The attach_ioas callback is issued when the device is attached to an - IOAS managed by the bound iommufd. The attached IOAS is automatically - detached when the device is unbound from iommufd. + - The [de]attach_ioas callback is issued when the device is attached to + and detached from an IOAS managed by the bound iommufd. However, the + attached IOAS can also be automatically detached when the device is + unbound from iommufd. - The read/write/mmap callbacks implement the device region access defined by the device's own VFIO_DEVICE_GET_REGION_INFO ioctl. |