From: Leon Romanovsky <leonro@xxxxxxxxxxxx>
The returned UAR pointer is actually void ** and points to whole
UAR database.
Because user is not supposed to access it and expected to use
the CQ doorbell, we will return uar[0] (CQ doorbell) directly
and eliminate the following logic in the applications:
uint64_t cq_db_reg = (uint64_t *)(((uint64_t)(uint64_t *)rxq->cq_uar) +
MLX5_CQ_DOORBELL;
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxxxx>
Reviewed-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
Pull request was sent:
https://github.com/linux-rdma/rdma-core/pull/184
providers/mlx5/mlx5.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/providers/mlx5/mlx5.c b/providers/mlx5/mlx5.c
index ede91cb..c7a6efb 100644
--- a/providers/mlx5/mlx5.c
+++ b/providers/mlx5/mlx5.c
@@ -678,7 +678,7 @@ static int mlx5dv_get_cq(struct ibv_cq *cq_in,
cq_out->cqe_size = mcq->cqe_sz;
cq_out->buf = mcq->active_buf->buf;
cq_out->dbrec = mcq->dbrec;
- cq_out->uar = mctx->uar;
+ cq_out->uar = mctx->uar[0];
mcq->flags |= MLX5_CQ_FLAGS_DV_OWNED;
--
1.8.3.1
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