From a1015c2b99b94cf521603b41debf167114031456 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Thu, 28 May 2015 18:41:33 +0200
Subject: [PATCH] iommu: Introduce direct mapped region handling

Add two new functions to the IOMMU-API to allow the IOMMU
drivers to export the requirements for direct mapped regions
per device.
This is useful for exporting the information in Intel VT-d's
RMRR entries or AMD-Vi's unity mappings.

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