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| author | Mark Zhang <markzhang@nvidia.com> | 2021-06-03 16:18:03 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2021-06-03 20:19:53 +0300 |
| commit | a0ffb4c12f7fa89163e228e6f27df09b46631db1 (patch) | |
| tree | 6b491664cf556a62801f3d0f18a3cae8e6fc27d2 /drivers/net/ethernet/mellanox/mlx4/main.c | |
| parent | a3e74fb9247cd530dca246699d5eb5a691884d32 (diff) | |
| download | linux-a0ffb4c12f7fa89163e228e6f27df09b46631db1.tar.xz | |
RDMA/mlx5: Use different doorbell memory for different processes
In a fork scenario, the parent and child can have same virtual address and
also share the uverbs fd. That causes to the list_for_each_entry search
return same doorbell physical page for all processes, even though that
page has been COW' or copied.
This patch takes the mm_struct into consideration during search, to make
sure that VA's belonging to different processes are not intermixed.
Resolves the malfunction of uverbs after fork in some specific cases.
Fixes: e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Link: https://lore.kernel.org/r/feacc23fe0bc6e1088c6824d5583798745e72405.1622726212.git.leonro@nvidia.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Mark Zhang <markzhang@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/main.c')
0 files changed, 0 insertions, 0 deletions