[PATCH for-next 0/4] RDMA/erdma: Support non-contiguous kernel queue buffers

[Cheng Xu <chengyou@linux.alibaba.com>]

Hi,

This small patchset introduces support for non-contiguous kernel queue
buffers. Kernel QP and CQ buffers currently use a single coherent DMA
allocation, which can fail for large queues when memory is fragmented.
To address this, we allocate page-sized coherent buffers and describe
them with the existing MTT.

- #1 adds support for non-contiguous kernel QP buffers.
- #2 adds support for non-contiguous kernel CQ buffers.
- #3 unifies userspace and kernel space queue buffer management.
- #4 moves kernel QP helpers after the shared memory helpers.

Thanks,
Cheng Xu

Cheng Xu (4):
  RDMA/erdma: Support non-contiguous kernel QP buffers
  RDMA/erdma: Support non-contiguous kernel CQ buffers
  RDMA/erdma: Unify userspace and kernel queue buffer management
  RDMA/erdma: Move kernel QP helpers after memory helpers

 drivers/infiniband/hw/erdma/erdma_cq.c    |  19 +-
 drivers/infiniband/hw/erdma/erdma_qp.c    |  38 +-
 drivers/infiniband/hw/erdma/erdma_verbs.c | 579 +++++++++++++---------
 drivers/infiniband/hw/erdma/erdma_verbs.h |  64 ++-
 4 files changed, 420 insertions(+), 280 deletions(-)

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2.31.1