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authorJason Gunthorpe <jgg@nvidia.com>2021-10-26 14:57:33 -0300
committerAlex Williamson <alex.williamson@redhat.com>2021-10-28 11:06:31 -0600
commit3bf1311f351ef289f2aee79b86bcece2039fa611 (patch)
tree6f701bc254cc677df38356bda766affd17c44774 /drivers/bus
parent39b6ee011f341526308577847f1002be5d1e0a6e (diff)
vfio/ccw: Convert to use vfio_register_emulated_iommu_dev()
This is a more complicated conversion because vfio_ccw is sharing the vfio_device between both the mdev_device, its vfio_device and the css_driver. The mdev is a singleton, and the reason for this sharing is so the extra css_driver function callbacks to be delivered to the vfio_device implementation. This keeps things as they are, with the css_driver allocating the singleton, not the mdev_driver. Embed the vfio_device in the vfio_ccw_private and instantiate it as a vfio_device when the mdev probes. The drvdata of both the css_device and the mdev_device point at the private, and container_of is used to get it back from the vfio_device. Reviewed-by: Eric Farman <farman@linux.ibm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/4-v4-cea4f5bd2c00+b52-ccw_mdev_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/bus')
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