On Wed, Sep 8, 2021 at 2:16 PM Shunsuke Mie <mie@xxxxxxxxxx> wrote: > > This patch series add a support for rxe driver. After applying the patches, please run rdma-core tests with the patched kernel. Then fix all the problems in rdma-core. Thanks Zhu Yanjun > > A dma-buf based memory registering has beed introduced to use the memory > region that lack of associated page structures (e.g. device memory and CMA > managed memory) [1]. However, to use the dma-buf based memory, each rdma > device drivers require add some implementation. The rxe driver has not > support yet. > > [1] https://www.spinics.net/lists/linux-rdma/msg98592.html > > To enable to use the memories in rxe rdma device, add some changes and > implementation in this patch series. > > This series consists of three patches. The first patch changes the IB core > to support for rdma drivers that have not real dma device. The second > patch extracts a memory mapping process of rxe as a common function to use > a dma-buf support. The third patch adds the dma-buf support to rxe driver. > > Related user space RDMA library changes are provided as a separate > patch. > > Shunsuke Mie (3): > RDMA/umem: Change for rdma devices has not dma device > RDMA/rxe: Extract a mapping process into a function > RDMA/rxe: Support dma-buf as memory region > > drivers/infiniband/core/umem_dmabuf.c | 2 +- > drivers/infiniband/sw/rxe/rxe_loc.h | 3 + > drivers/infiniband/sw/rxe/rxe_mr.c | 186 +++++++++++++++++++++----- > drivers/infiniband/sw/rxe/rxe_verbs.c | 36 +++++ > 4 files changed, 193 insertions(+), 34 deletions(-) > > -- > 2.17.1 >
