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| author |   Haggai Eran <haggaie@mellanox.com> | 2014-12-11 17:04:22 +0200 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2014-12-15 18:19:02 -0800 |
| commit | 832a6b06ab5e13c228fc27e333ad360aa03ace6f (patch) | |
| tree | f47db1bab24137255c54f055b4bddbddff1fb7e4 /include/linux/mlx5 | |
| parent | IB/mlx5: Changes in memory region creation to support on-demand paging (diff) | |
| download | linux-dev-832a6b06ab5e13c228fc27e333ad360aa03ace6f.tar.xz linux-dev-832a6b06ab5e13c228fc27e333ad360aa03ace6f.zip | |
IB/mlx5: Add mlx5_ib_update_mtt to update page tables after creation
The new function allows updating the page tables of a memory region
after it was created. This can be used to handle page faults and page
invalidations.
Since mlx5_ib_update_mtt will need to work from within page invalidation,
so it must not block on memory allocation. It employs an atomic memory
allocation mechanism that is used as a fallback when kmalloc(GFP_ATOMIC) fails.
In order to reuse code from mlx5_ib_populate_pas, the patch splits
this function and add the needed parameters.
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'include/linux/mlx5')
| -rw-r--r-- | include/linux/mlx5/device.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mlx5/device.h b/include/linux/mlx5/device.h index 64512a7354cb..4e5bd813bb9a 100644 --- a/include/linux/mlx5/device.h +++ b/include/linux/mlx5/device.h @@ -200,6 +200,7 @@ enum { #define MLX5_UMR_MTT_ALIGNMENT 0x40 #define MLX5_UMR_MTT_MASK (MLX5_UMR_MTT_ALIGNMENT - 1) +#define MLX5_UMR_MTT_MIN_CHUNK_SIZE MLX5_UMR_MTT_ALIGNMENT enum mlx5_event { MLX5_EVENT_TYPE_COMP = 0x0, |