[PATCH for-next 0/2] RDMA: Support CQs with user memory

[Michael Margolin <mrgolin@amazon.com>]

This series is adding a common way for creating CQs on top of
preallocated memory supplied by userspace. The memory buffer can be
provided as a virtual address or by dmabuf, in both cases a umem object
is created for driver's use.
EFA is the first to support this new interface, new drivers or existing
drivers that want/need to get the memory from userspace are expected to
use this flow.

It's follow-up of this discussion:
https://lore.kernel.org/all/c7d312ac-19a0-45e3-9f40-3e6f81500f83@amazon.com/

Thanks

Michael Margolin (2):
  RDMA/uverbs: Add a common way to create CQ with umem
  RDMA/efa: Add CQ with external memory support

 drivers/infiniband/core/device.c              |  3 +
 drivers/infiniband/core/uverbs_std_types_cq.c | 82 ++++++++++++++++++-
 drivers/infiniband/hw/efa/efa_main.c          |  1 +
 drivers/infiniband/hw/efa/efa_verbs.c         | 47 ++++++++---
 include/rdma/ib_verbs.h                       |  6 ++
 include/uapi/rdma/efa-abi.h                   |  3 +-
 include/uapi/rdma/ib_user_ioctl_cmds.h        |  4 +
 7 files changed, 129 insertions(+), 17 deletions(-)

-- 
2.47.1