[RFC][Focal][PATCH 0/2] Add IB peer memory interface
dann frazier
dann.frazier at canonical.com
Mon Aug 30 22:50:12 UTC 2021
BugLink: https://bugs.launchpad.net/bugs/1923104
This is a backport of a SAUCE patch we're already carrying in hirsute[*].
In a conversation w/ Terry, he mentioned that he'd like to see some amount
of real world functional testing be completed before we'd consider SRU'ing
to other kernels. That testing will take some scheduling/engineering effort
so, in order to minimize the risk of respins/retests, I'm submitting this as
an RFC. My goal here is to try and fish out any aspects of this patch that
are likely to get NAK'd - even if testing were to pass.
Note: Going back to 5.4 requires backporting an additional upstream patch,
which changes the API of an exported symbol (ib_umem_get). The only out
of tree modules of which I'm aware that use this symbol are the Mellanox
OFED drivers, but they also bundle their own ib_core module that overrides
the ib_umem_get interface we provide, so they aren't directly impacted.
Of course, we can't rule out other users.
[*] https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/hirsute/commit/?id=e9eb90eb5e4a5aef6f516abbc720038fc0d1a139
Feras Daoud (1):
RDMA/core: Introduce peer memory interface
Moni Shoua (1):
IB: Allow calls to ib_umem_get from kernel ULPs
drivers/infiniband/core/Makefile | 2 +-
drivers/infiniband/core/ib_peer_mem.h | 52 ++
drivers/infiniband/core/peer_mem.c | 484 ++++++++++++++++++
drivers/infiniband/core/umem.c | 69 ++-
drivers/infiniband/core/umem_odp.c | 33 +-
drivers/infiniband/hw/bnxt_re/ib_verbs.c | 12 +-
drivers/infiniband/hw/cxgb3/iwch_provider.c | 2 +-
drivers/infiniband/hw/cxgb4/mem.c | 2 +-
drivers/infiniband/hw/efa/efa_verbs.c | 2 +-
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 | 2 +-
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 | 11 +-
drivers/infiniband/hw/mlx5/devx.c | 2 +-
drivers/infiniband/hw/mlx5/doorbell.c | 3 +-
drivers/infiniband/hw/mlx5/mem.c | 11 +-
drivers/infiniband/hw/mlx5/mr.c | 60 ++-
drivers/infiniband/hw/mlx5/odp.c | 2 +-
drivers/infiniband/hw/mlx5/qp.c | 4 +-
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 | 33 +-
include/rdma/ib_umem_odp.h | 9 +-
include/rdma/peer_mem.h | 165 ++++++
40 files changed, 908 insertions(+), 121 deletions(-)
create mode 100644 drivers/infiniband/core/ib_peer_mem.h
create mode 100644 drivers/infiniband/core/peer_mem.c
create mode 100644 include/rdma/peer_mem.h
--
2.33.0
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