/etc/zipl.conf must be labelled as boot_t (same as grub or yaboot config files) otherwise system-config-kdump won't work on s390x, see bug #813337
Created attachment 578536 [details]
The kexec-tool package contains a local policy file that talks about boot_t, but I don't know if or how it is used. There seems to be a support for labelling bootloader files in modules/admin/bootloader.fc so I guess zipl support should be modelled after grub, lilo or yaboot.
I added the patch to Fedora.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.