From: Haggai Eran <haggaie@mellanox.com>
Date: Thu, 11 Dec 2014 15:04:21 +0000 (+0200)
Subject: IB/mlx5: Changes in memory region creation to support on-demand paging
X-Git-Tag: omap-for-v3.19/fixes-rc1~37^2^7~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc149f751b75211df8c41fcd60bd0006e6143ed6;p=pandora-kernel.git

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

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>
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