[PATCH rdma-next] RDMA/core: Rely on vendors to set right IOVA

From: Leon Romanovsky
Date: Thu Oct 28 2021 - 01:55:42 EST


From: Aharon Landau <aharonl@xxxxxxxxxx>

The vendors set the IOVA of newly created MRs in rereg_user_mr, so don't
overwrite it. That ensures that this field is set only if IB_MR_REREG_TRANS
flag is provided.

Fixes: 6e0954b11c05 ("RDMA/uverbs: Allow drivers to create a new HW object during rereg_mr")
Signed-off-by: Aharon Landau <aharonl@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/core/uverbs_cmd.c | 3 ---
1 file changed, 3 deletions(-)

diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 740e6b2efe0e..d1345d76d9b1 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -837,11 +837,8 @@ static int ib_uverbs_rereg_mr(struct uverbs_attr_bundle *attrs)
new_mr->device = new_pd->device;
new_mr->pd = new_pd;
new_mr->type = IB_MR_TYPE_USER;
- new_mr->dm = NULL;
- new_mr->sig_attrs = NULL;
new_mr->uobject = uobj;
atomic_inc(&new_pd->usecnt);
- new_mr->iova = cmd.hca_va;
new_uobj->object = new_mr;

rdma_restrack_new(&new_mr->res, RDMA_RESTRACK_MR);
--
2.31.1