From: Leon Romanovsky <leonro@xxxxxxxxxxxx> Hi, The following series extends MR creation routines to allow creation of user MRs through kernel ULPs as a proxy. The immediate use case is to allow RDS to work over FS-DAX, which requires ODP (on-demand-paging) MRs to be created and such MRs were not possible to create prior this series. The first part of this patchset extends RDMA to have special verb ib_reg_user_mr(). The common use case that uses this function is a userspace application that allocates memory for HCA access but the responsibility to register the memory at the HCA is on an kernel ULP. This ULP that acts as an agent for the userspace application. The second part provides advise MR functionality for ULPs. This is integral part of ODP flows and used to trigger pagefaults in advance to prepare memory before running working set. The third part is actual user of those in-kernel APIs. Thanks Hans Westgaard Ry (3): net/rds: Detect need of On-Demand-Paging memory registration net/rds: Handle ODP mr registration/unregistration net/rds: Use prefetch for On-Demand-Paging MR Jason Gunthorpe (1): RDMA/mlx5: Fix handling of IOVA != user_va in ODP paths Leon Romanovsky (1): RDMA/mlx5: Don't fake udata for kernel path Moni Shoua (5): IB: Allow calls to ib_umem_get from kernel ULPs IB/core: Introduce ib_reg_user_mr IB/core: Add interface to advise_mr for kernel users IB/mlx5: Add ODP WQE handlers for kernel QPs IB/mlx5: Mask out unsupported ODP capabilities for kernel QPs drivers/infiniband/core/umem.c | 27 +-- drivers/infiniband/core/umem_odp.c | 29 +-- drivers/infiniband/core/verbs.c | 41 +++++ drivers/infiniband/hw/bnxt_re/ib_verbs.c | 12 +- drivers/infiniband/hw/cxgb4/mem.c | 2 +- drivers/infiniband/hw/efa/efa_verbs.c | 4 +- drivers/infiniband/hw/hns/hns_roce_cq.c | 2 +- drivers/infiniband/hw/hns/hns_roce_db.c | 3 +- drivers/infiniband/hw/hns/hns_roce_mr.c | 4 +- drivers/infiniband/hw/hns/hns_roce_qp.c | 2 +- drivers/infiniband/hw/hns/hns_roce_srq.c | 5 +- drivers/infiniband/hw/i40iw/i40iw_verbs.c | 5 +- drivers/infiniband/hw/mlx4/cq.c | 2 +- drivers/infiniband/hw/mlx4/doorbell.c | 3 +- drivers/infiniband/hw/mlx4/mr.c | 8 +- drivers/infiniband/hw/mlx4/qp.c | 5 +- drivers/infiniband/hw/mlx4/srq.c | 3 +- drivers/infiniband/hw/mlx5/cq.c | 6 +- drivers/infiniband/hw/mlx5/devx.c | 2 +- drivers/infiniband/hw/mlx5/doorbell.c | 3 +- drivers/infiniband/hw/mlx5/main.c | 51 ++++-- drivers/infiniband/hw/mlx5/mlx5_ib.h | 12 +- drivers/infiniband/hw/mlx5/mr.c | 20 +-- drivers/infiniband/hw/mlx5/odp.c | 33 ++-- drivers/infiniband/hw/mlx5/qp.c | 167 +++++++++++------- drivers/infiniband/hw/mlx5/srq.c | 2 +- drivers/infiniband/hw/mthca/mthca_provider.c | 2 +- drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +- drivers/infiniband/hw/qedr/verbs.c | 9 +- drivers/infiniband/hw/vmw_pvrdma/pvrdma_cq.c | 2 +- drivers/infiniband/hw/vmw_pvrdma/pvrdma_mr.c | 2 +- drivers/infiniband/hw/vmw_pvrdma/pvrdma_qp.c | 7 +- drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c | 2 +- drivers/infiniband/sw/rdmavt/mr.c | 2 +- drivers/infiniband/sw/rxe/rxe_mr.c | 2 +- include/rdma/ib_umem.h | 4 +- include/rdma/ib_umem_odp.h | 6 +- include/rdma/ib_verbs.h | 9 + net/rds/ib.c | 7 + net/rds/ib.h | 3 +- net/rds/ib_mr.h | 7 +- net/rds/ib_rdma.c | 83 ++++++++- net/rds/ib_send.c | 44 +++-- net/rds/rdma.c | 156 +++++++++++----- net/rds/rds.h | 13 +- 45 files changed, 559 insertions(+), 256 deletions(-) -- 2.20.1
