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authorAlex Williamson <alex.williamson@redhat.com>2012-07-31 08:16:23 -0600
committerAlex Williamson <alex.williamson@redhat.com>2012-07-31 08:16:23 -0600
commit73fa0d10d077d9521ee2dace2307ae2c9a965336 (patch)
tree2c820b194dd8ea00f23d85c382e86ea6c3beb498 /drivers/vfio/vfio.c
parent4a5b2a20ec87384eeb19e70991e7e15a00cad87b (diff)
downloadop-kernel-dev-73fa0d10d077d9521ee2dace2307ae2c9a965336.zip
op-kernel-dev-73fa0d10d077d9521ee2dace2307ae2c9a965336.tar.gz
vfio: Type1 IOMMU implementation
This VFIO IOMMU backend is designed primarily for AMD-Vi and Intel VT-d hardware, but is potentially usable by anything supporting similar mapping functionality. We arbitrarily call this a Type1 backend for lack of a better name. This backend has no IOVA or host memory mapping restrictions for the user and is optimized for relatively static mappings. Mapped areas are pinned into system memory. Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/vfio.c')
-rw-r--r--drivers/vfio/vfio.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
index 052e310..9591e2b 100644
--- a/drivers/vfio/vfio.c
+++ b/drivers/vfio/vfio.c
@@ -1376,6 +1376,13 @@ static int __init vfio_init(void)
pr_info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
+ /*
+ * Attempt to load known iommu-drivers. This gives us a working
+ * environment without the user needing to explicitly load iommu
+ * drivers.
+ */
+ request_module_nowait("vfio_iommu_type1");
+
return 0;
err_groups_cdev:
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