b33d59fb37dd ("s390/uaccess: avoid __ashlti3() call")
51098f0eb22e ("s390/cmpxchg: make loop condition for 1,2 byte cases precise")
4148575abe1e ("s390/uaccess: add cmpxchg_user_key()")
ce968f654570 ("s390/cmpxchg: make variables local to each case label")
13f62e84385f ("s390/cmpxchg: use symbolic names for inline assembly operands")