On Mon, Jan 02, 2023 at 08:34:33PM -0500, Zhu Yanjun wrote: > From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx> > > This is a followup to the EFA dmabuf[1]. Irdma driver currently does > not support on-demand-paging(ODP). So it uses habanalabs as the > dmabuf exporter, and irdma as the importer to allow for peer2peer > access through libibverbs. > > In this commit, the function ib_umem_dmabuf_get_pinned() is used. > This function is introduced in EFA dmabuf[1] which allows the driver > to get a dmabuf umem which is pinned and does not require move_notify > callback implementation. The returned umem is pinned and DMA mapped > like standard cpu umems, and is released through ib_umem_release(). > > [1]https://lore.kernel.org/lkml/20211007114018.GD2688930@xxxxxxxx/t/ > > Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx> > --- > drivers/infiniband/hw/irdma/verbs.c | 158 ++++++++++++++++++++++++++++ > 1 file changed, 158 insertions(+) > > diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c > index f6973ea55eda..76dc6e65930a 100644 > --- a/drivers/infiniband/hw/irdma/verbs.c > +++ b/drivers/infiniband/hw/irdma/verbs.c > @@ -2912,6 +2912,163 @@ static struct ib_mr *irdma_reg_user_mr(struct ib_pd *pd, u64 start, u64 len, > return ERR_PTR(err); > } > > +struct ib_mr *irdma_reg_user_mr_dmabuf(struct ib_pd *pd, u64 start, > + u64 len, u64 virt, > + int fd, int access, > + struct ib_udata *udata) kbuild complained about this line, it should be "static struct ..." And please use target in your patches: rdma-next/rdma-rc. Thanks
