+# bump this when breaking compatibility with userspace
+%define module_abi_version 0
+
+# extract kernel type (xen or kdump)
+%define binsuffix -%(echo '%{xen_version}' | sed -r 's/^.*[0-9]+//')
+# kernel version string w/o kernel type
+%define kernel_version %(echo '%{xen_version}' | sed -r 's/[a-z]+$//')
+# build-supplemental-pack.sh requires this naming for kernel module packages
+%define module_package modules%{binsuffix}-%{kernel_version}
+