From: Michael Gur <michaelgur@nvidia.com>
To: jgg@ziepe.ca, leon@kernel.org, linux-rdma@vger.kernel.org
Cc: Edward Srouji <edwards@nvidia.com>,
Yishai Hadas <yishaih@nvidia.com>,
Michael Gur <michaelgur@nvidia.com>,
stable@vger.kernel.org, Jason Gunthorpe <jgg@nvidia.com>,
Yishai Hadas <yishaih@mellanox.com>,
Michael Guralnik <michaelgur@mellanox.com>,
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH rdma-next v2 01/15] RDMA/mlx5: Allow optional access flags in DM registration
Date: Tue, 3 Nov 2026 00:32:54 +0200 [thread overview]
Message-ID: <20261102223325.2115128-2-michaelgur@nvidia.com> (raw)
In-Reply-To: <20261102223325.2115128-1-michaelgur@nvidia.com>
The uverbs ABI reserves the optional access flags range as best-effort:
drivers should accept any flag in this range and treat the actual support
as opportunistic, never failing registration when an optional flag is
requested.
Add the optional access flag to the allow-lists of DM registrations.
Uverbs users can now request any optional access flag on DM registrations
and mlx5 will apply the flag's effect on a best-effort basis when
supported.
Fixes: 68d384b906cf ("RDMA/core: Add optional access flags range")
Cc: stable@vger.kernel.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Yishai Hadas <yishaih@nvidia.com>
Signed-off-by: Michael Gur <michaelgur@nvidia.com>
---
drivers/infiniband/hw/mlx5/mlx5_ib.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 4a6ee14ffd7d..86465d9d2b5a 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -661,11 +661,13 @@ struct mlx5_ib_mkey {
IB_ACCESS_REMOTE_WRITE |\
IB_ACCESS_REMOTE_READ |\
IB_ACCESS_REMOTE_ATOMIC |\
+ IB_ACCESS_OPTIONAL |\
IB_ZERO_BASED)
#define MLX5_IB_DM_SW_ICM_ALLOWED_ACCESS (IB_ACCESS_LOCAL_WRITE |\
IB_ACCESS_REMOTE_WRITE |\
IB_ACCESS_REMOTE_READ |\
+ IB_ACCESS_OPTIONAL |\
IB_ZERO_BASED)
#define mlx5_update_odp_stats(mr, counter_name, value) \
--
2.52.0
next parent reply other threads:[~2026-11-02 22:34 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20261102223325.2115128-1-michaelgur@nvidia.com>
2026-11-02 22:32 ` Michael Gur [this message]
2026-11-02 22:32 ` [PATCH rdma-next v2 02/15] RDMA/mlx5: Allow optional access flags in DEVX UMEM registration Michael Gur
2026-11-02 22:32 ` [PATCH rdma-next v2 03/15] RDMA/core: Allow optional access flags in dmabuf reg ioctl Michael Gur
2026-11-02 22:32 ` [PATCH rdma-next v2 04/15] RDMA/core: Allow optional access flags in reg mr ioctl Michael Gur
2026-11-02 22:32 ` [PATCH rdma-next v2 05/15] mlx5: Rename IFC bits of relaxed ordering fields Michael Gur
2026-11-02 22:32 ` [PATCH rdma-next v2 06/15] net/mlx5: Add IFC bits for new ordering caps Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 07/15] mlx5: Consolidate mkey ordering setting into a single core helper Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 08/15] net/mlx5: Enable relaxed ordering on resource dump mkey Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 09/15] net/mlx5: Enable relaxed ordering on FW tracer mkey Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 10/15] vfio/mlx5: Enable relaxed ordering on the live migration data mkey Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 11/15] RDMA/mlx5: Enable relaxed ordering on ODP null mkey Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 12/15] RDMA/mlx5: Converge UMR access-flag cap checks Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 13/15] RDMA/uverbs: Add new Unordered MR access flag Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 14/15] RDMA/mlx5: Support new Unordered " Michael Gur
2026-11-02 22:33 ` [PATCH rdma-next v2 15/15] RDMA/mlx5: Enforce relaxed ordering when HW requires it Michael Gur
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