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3cedd7d75f
mdev vendor driver should unregister the iommu notifier since the vfio iommu can persist beyond the attachment of the mdev group. WARN_ON will show warning if vendor driver doesn't unregister the notifier and is forced to follow the implementations steps. Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com> Signed-off-by: Neo Jia <cjia@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>