X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;ds=sidebyside;f=Documentation%2FABI%2Ftesting%2Fsysfs-kernel-iommu_groups;h=b15af6a5bc08145206553a5faa5270ed586773c2;hb=6701e7e7d8ee4f80d0c450aeab101e4a2a2678fa;hp=eae2f1c1e11e9e19f22fecbdf0f9731fb9e8e0ea;hpb=5d3c0db4598c5de511824649df2aa976259cf10a;p=linux-2.6-microblaze.git

diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index eae2f1c1e11e..b15af6a5bc08 100644
--- 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.
 		========  ======================================================