linux/drivers/vfio
Yan Zhao c0560f51cf vfio: allow external user to get vfio group from device
external user calls vfio_group_get_external_user_from_dev() with a device
pointer to get the VFIO group associated with this device.
The VFIO group is checked to be vialbe and have IOMMU set. Then
container user counter is increased and VFIO group reference is hold
to prevent the VFIO group from disposal before external user exits.

when the external user finishes using of the VFIO group, it calls
vfio_group_put_external_user() to dereference the VFIO group and the
container user counter.

Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2020-03-24 09:27:56 -06:00
..
mdev vfio/mdev: make create attribute static 2020-01-09 11:30:57 -07:00
pci VFIO updates for v5.6-rc1 2020-02-03 22:22:05 +00:00
platform VFIO updates for v5.6-rc1 2020-02-03 22:22:05 +00:00
Kconfig docs: driver-api: add a series of orphaned documents 2019-07-15 11:03:02 -03:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vfio_iommu_spapr_tce.c vfio/spapr_tce: use mmgrab 2020-01-07 13:03:12 -07:00
vfio_iommu_type1.c mm, tree-wide: rename put_user_page*() to unpin_user_page*() 2020-01-31 10:30:38 -08:00
vfio_spapr_eeh.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
vfio.c vfio: allow external user to get vfio group from device 2020-03-24 09:27:56 -06:00
virqfd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00