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IB/mlx5: Changes in memory region creation to support on-demand paging

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This patch wraps together several changes needed for on-demand paging support
in the mlx5_ib_populate_pas function, and when registering memory regions.

* Instead of accepting a UMR bit telling the function to enable all
  access flags, the function now accepts the access flags themselves.
* For on-demand paging memory regions, fill the memory tables from the
  correct list, and enable/disable the access flags per-page according
  to whether the page is present.
* A new bit is set to enable writing of access flags when using the
  firmware create_mkey command.
* Disable contig pages when on-demand paging is enabled.

In addition the patch changes the UMR code to use PTR_ALIGN instead of
our own macro.

Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Haggai Eran 2014-12-11 17:04:21 +02:00 • committed by Roland Dreier
parent 8cdd312cfe
commit cc149f751b
4 changed files with 88 additions and 18 deletions
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3
include/linux/mlx5/device.h
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@ -198,6 +198,9 @@ enum {
MLX5_UMR_INLINE = (1 << 7),
};
#define MLX5_UMR_MTT_ALIGNMENT 0x40
#define MLX5_UMR_MTT_MASK (MLX5_UMR_MTT_ALIGNMENT - 1)
enum mlx5_event {
MLX5_EVENT_TYPE_COMP = 0x0,