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

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Message-Id: <4b0a31bbc372842613286a10d7a8cbb0ee6069c7.1635400472.git.leonro@nvidia.com>
Date:   Thu, 28 Oct 2021 08:55:22 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...dia.com>
Cc:     Aharon Landau <aharonl@...dia.com>, linux-kernel@...r.kernel.org,
        linux-rdma@...r.kernel.org
Subject: [PATCH rdma-next] RDMA/core: Rely on vendors to set right IOVA

From: Aharon Landau <aharonl@...dia.com>

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@...dia.com>
Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 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