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| author | Jiri Pirko <jiri@nvidia.com> | 2026-05-29 15:43:11 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-05-29 20:19:59 -0300 |
| commit | d6ab1d243973acb046aab8f6daea90005041070a (patch) | |
| tree | 70b0052b9f7e93ebbbdd6f79920d1ce8859da740 /kernel/fail_function.c | |
| parent | 2cc10972f5f4f123e5a7658824db4f7b5abfc410 (diff) | |
RDMA/mlx5: Use UMEM attribute for CQ doorbell record
Add an optional mlx5 driver-namespace UMEM attribute on CQ
create so userspace can supply the doorbell record buffer
explicitly. mlx5_ib_db_map_user() resolves the attribute (or
falls back to the legacy UHW VA) into a struct
ib_uverbs_buffer_desc and runs a unified lookup-then-pin:
VA-typed descriptors share a per-page umem across CQ/QP/SRQ
in the same process, FD-typed descriptors are pinned per call.
Link: https://patch.msgid.link/r/20260529134312.2836341-16-jiri@resnulli.us
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'kernel/fail_function.c')
0 files changed, 0 insertions, 0 deletions