--- a/Documentation/ABI/testing/sysfs-driver-pciback	2020-03-30 00:25:41.000000000 +0200
+++ b/Documentation/ABI/testing/sysfs-driver-pciback	2020-03-30 21:01:58.909583316 +0200
@@ -12,6 +12,19 @@
                 will allow the guest to read and write to the configuration
                 register 0x0E.
 
+
+What:           /sys/bus/pci/drivers/pciback/reset
+Date:           Nov 2017
+KernelVersion:  none
+Contact:        xen-devel@xxxxxxxxxxxxxxxxxxxx
+Description:
+                An option to perform a slot or bus reset when a PCI device
+		is owned by Xen PCI backend. Writing a string of DDDD:BB:DD.F
+		will cause the pciback driver to perform a slot or bus reset
+		if the device supports it. It also checks to make sure that
+		all of the devices under the bridge are owned by Xen PCI
+		backend.
+
 What:           /sys/bus/pci/drivers/pciback/allow_interrupt_control
 Date:           Jan 2020
 KernelVersion:  5.6