From: Alexander Duyck <alexander.h.duyck@intel.com>
Date: Tue, 25 Sep 2012 00:31:02 +0000 (+0000)
Subject: igb: Map entire page and sync half instead of mapping and unmapping half pages
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~45^2~625^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cbc8e55f6fdae27b667051b36040f66768ef79f2;p=pandora-kernel.git

igb: Map entire page and sync half instead of mapping and unmapping half pages

This change makes it so that we map the entire page and just sync half of
it for the device at a time.  The advantage to this approach is that we can
avoid the locking on map/unmap seen in many IOMMU implementations.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
---

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