diff -Nru initramfs-tools-0.103ubuntu4.3/debian/changelog initramfs-tools-0.103ubuntu4.4/debian/changelog
--- initramfs-tools-0.103ubuntu4.3/debian/changelog	2016-02-25 18:55:10.000000000 +0000
+++ initramfs-tools-0.103ubuntu4.4/debian/changelog	2016-08-01 18:35:13.000000000 +0000
@@ -1,3 +1,13 @@
+initramfs-tools (0.103ubuntu4.4) trusty; urgency=low
+
+  * Backport Xenial driver lists (LP: #1608622):
+   - add nvme drivers to block.
+   - add ehci-* drivers to base.
+   - add xhci-* drivers to base.
+   - add virtio-* drivers to base.
+
+ -- Andy Whitcroft <apw@ubuntu.com>  Mon, 01 Aug 2016 19:22:50 +0100
+
 initramfs-tools (0.103ubuntu4.3) trusty; urgency=medium
 
   [ Dimitri John Ledkov ]
diff -Nru initramfs-tools-0.103ubuntu4.3/hook-functions initramfs-tools-0.103ubuntu4.4/hook-functions
--- initramfs-tools-0.103ubuntu4.3/hook-functions	2014-05-01 09:44:42.000000000 +0000
+++ initramfs-tools-0.103ubuntu4.4/hook-functions	2016-08-01 18:39:41.000000000 +0000
@@ -429,6 +429,7 @@
 	case "${1:-}" in
 	base)
 		for x in ehci-hcd ohci-hcd ohci-pci uhci-hcd usbhid xhci xhci-hcd hid-apple \
+		ehci-msm ehci-orion ehci-pci xhci-pci \
 		hid-cherry hid-logitech hid-logitech-dj hid-microsoft \
 		hid-a4tech hid-belkin hid-bright hid-chicony \
 		hid-cypress hid-dell hid-ezkey hid-gyration \
@@ -436,6 +437,7 @@
 		hid-sunplus hid-tmff hid-zpff hid-generic \
 		btrfs ext2 ext3 ext4 ext4dev isofs jfs nfs nfsv3 nfsv4 nfs_acl \
 		reiserfs udf xfs vfat nls_cp437 nls_iso8859-1 \
+		virtio_mmio \
 		af_packet atkbd i8042 virtio_pci psmouse; do
 			manual_add_modules "${x}"
 		done
@@ -462,6 +464,7 @@
 	;;
 	block)
 		copy_modules_dir kernel/drivers/block
+		copy_modules_dir kernel/drivers/nvme
 	;;
 	ubi)
 		for x in deflate zlib lzo ubi ubifs; do