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RDMA/mlx5: Relax DEVX access upon modify commands 

[ Upstream commit be551ee157 ]

Relax DEVX access upon modify commands to be UVERBS_ACCESS_READ.

The kernel doesn't need to protect what firmware protects, or what
causes no damage to anyone but the user.

As firmware needs to protect itself from parallel access to the same
object, don't block parallel modify/query commands on the same object in
the kernel side.

This change will allow user space application to run parallel updates to
different entries in the same bulk object.

Tested-by: Tamar Mashiah <tmashiah@nvidia.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Reviewed-by: Michael Guralnik <michaelgur@nvidia.com>
Link: https://lore.kernel.org/r/7407d5ed35dc427c1097699e12b49c01e1073406.1706433934.git.leon@kernel.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yishai Hadas 2024-01-28 11:29:13 +02:00 committed by Sasha Levin
parent cad82f1671
commit 6d4c7bd6dc
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/mlx5/devx.c
View File

@ -2951,7 +2951,7 @@ DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
UVERBS_IDR_ANY_OBJECT,
UVERBS_ACCESS_WRITE,
UVERBS_ACCESS_READ,
UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,