From: Joerg Roedel <jroedel@suse.de>
Date: Tue, 28 Jul 2015 14:58:50 +0000 (+0200)
Subject: iommu/amd: Use swiotlb in passthrough mode
X-Git-Tag: omap-for-v4.3/fixes-merge-window~161^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=323023245771589c53869396e3297c703d347852;p=pandora-kernel.git

iommu/amd: Use swiotlb in passthrough mode

In passthrough mode (iommu=pt) all devices are identity
mapped. If a device does not support 64bit DMA it might
still need remapping. Make sure swiotlb is initialized to
provide this remapping.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
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