now my UML/s390 works based on 2.6.11-bk8 + incrementals.
But I had to apply some patches:
Patch adds the missing function atomic_sub_return() in
This is the revised version of the patch, which now should
compile on all hosts.
These modify UML to fit for UML/s390 needs.
Some entries not allowed for s390 again were moved to sys_call_table.c
This fixes the "write of switch_pipe failed, err = 9" panic, that
a few times happened on i386, when we tried different ways to kill
On my very slow s390 host I could reproduce the problem several times
and found the reason for it (after a few days of work).
All these patches and the commented series are in the attached tarball.