From 47bccd6bb2b866449d3ecf2ba350ac1c7473b2b8 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Fri, 22 May 2009 12:40:54 +0200
Subject: [PATCH] amd-iommu: don't free dma adresses below 512MB with
 CONFIG_IOMMU_STRESS

This will test the automatic aperture enlargement code. This is
important because only very few devices will ever trigger this code
path. So force it under CONFIG_IOMMU_STRESS.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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