On Thu, Sep 29, 2022 at 02:21:24PM +0800, Li Zhijian wrote: > we can see, IBV_ACCESS_REMOTE_ATOMIC and IBV_ACCESS_ON_DEMAND are > tagged "if supported" . but currently kernel just returns EINVAL > when user registers a MR with IB_ACCESS_ON_DEMAND to RXE. > > I wonder we should return -EOPNOTSUPP if the device doesn't support requested capabilities Yes, unsupported combinations of access flags should trigger EOPNOTSUPP Jason
