> From: Liu, Yi L <yi.l.liu@xxxxxxxxx> > Sent: Friday, March 3, 2023 2:58 PM > > > What should we return here anyhow if an access was created? > > iommufd_access->obj.id. should be fine. Is it? > Thinking more I'm not sure whether it's a good idea to fill the dev_id field with an access object id and then later confuse the user to get an -ENOENT error when trying to allocate a hwpt with an access object id. How can user differentiate it from the real error case where invalid iommufd object is used? It sounds clearer to return dev_id only when there is a true device object being created by the bind_iommufd cmd. Then the user can use it to decide whether to further attempt dev_id related cmds.
