tree b8bc5e6391da51786627aaa55d79fa384bb8b47a
parent db2ee5bdf5c83320fa19f73a38204585f1518798
author Alexander Duyck <alexander.h.duyck@intel.com> 1348533062 +0000
committer Jeff Kirsher <jeffrey.t.kirsher@intel.com> 1350646225 -0700

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>