On Sat, Sep 7, 2019 at 9:34 AM Jason Gunthorpe <jgg@xxxxxxxxxxxx> wrote: > > @@ -374,7 +374,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable) > > unsigned int foll_flags = FOLL_WRITE; > > int num_pages, num_chunks, i, rv = 0; > > > > - if (!can_do_mlock()) > > + if (!IS_ENABLED(CONFIG_MMU) || !can_do_mlock()) > > return ERR_PTR(-EPERM); > > I feel like !CONFIG_MMU should provide a dummy inline stub for can_do_mlock > instead? Fair enough. I've added that to my test tree in place of my first patch and will send it after some more build testing. Arnd