Merge branch 'work.gfs2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

[linux-2.6-microblaze.git] / Documentation / ABI / testing / sysfs-kernel-iommu_groups

diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index eae2f1c..b15af6a 100644 (file)
--- a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
+++ b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
@@ -42,8 +42,12 @@ Description: /sys/kernel/iommu_groups/<grp_id>/type shows the type of default
                ========  ======================================================
                DMA       All the DMA transactions from the device in this group
                          are translated by the iommu.
+               DMA-FQ    As above, but using batched invalidation to lazily
+                         remove translations after use. This may offer reduced
+                         overhead at the cost of reduced memory protection.
                identity  All the DMA transactions from the device in this group
-                         are not translated by the iommu.
+                         are not translated by the iommu. Maximum performance
+                         but zero protection.
                auto      Change to the type the device was booted with.
                ========  ======================================================