From: Alex Williamson <alex.williamson@redhat.com>
Date: Fri, 21 Jun 2013 15:38:11 +0000 (-0600)
Subject: vfio: Provide module option to disable vfio_iommu_type1 hugepage support
X-Git-Tag: v3.11-rc1~46^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c6c2b21ecc9adfc47cfaf93404937b6ecd8395d;p=pandora-kernel.git

vfio: Provide module option to disable vfio_iommu_type1 hugepage support

Add a module option to vfio_iommu_type1 to disable IOMMU hugepage
support.  This causes iommu_map to only be called with single page
mappings, disabling the IOMMU driver's ability to use hugepages.
This option can be enabled by loading vfio_iommu_type1 with
disable_hugepages=1 or dynamically through sysfs.  If enabled
dynamically, only new mappings are restricted.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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