From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Date: Wed, 5 Aug 2015 20:14:45 +0000 (-0600)
Subject: IB/core: Guarantee that a local_dma_lkey is available
X-Git-Tag: omap-for-v4.3/fixes-rc1~52^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=96249d70dd70;p=pandora-kernel.git

IB/core: Guarantee that a local_dma_lkey is available

Every single ULP requires a local_dma_lkey to do anything with
a QP, so let us ensure one exists for every PD created.

If the driver can supply a global local_dma_lkey then use that, otherwise
ask the driver to create a local use all physical memory MR associated
with the new PD.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Sagi Grimberg <sagig@dev.mellanox.co.il>
Acked-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Tested-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---

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