Update Linux to v5.4.2
Change-Id: Idf6911045d9d382da2cfe01b1edff026404ac8fd
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index 35c64e0..017f5bc 100644
--- a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
+++ b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
@@ -24,3 +24,12 @@
region is described on a single line: the 1st field is
the base IOVA, the second is the end IOVA and the third
field describes the type of the region.
+
+What: /sys/kernel/iommu_groups/reserved_regions
+Date: June 2019
+KernelVersion: v5.3
+Contact: Eric Auger <eric.auger@redhat.com>
+Description: In case an RMRR is used only by graphics or USB devices
+ it is now exposed as "direct-relaxable" instead of "direct".
+ In device assignment use case, for instance, those RMRR
+ are considered to be relaxable and safe.