Merge branch 'features' into for-next

Merge branch 'features' into for-next

* features:
  s390/mm: use CRST_ALLOC_ORDER instead of number
  s390/maccess: fix semantics of memcpy_real() and its callers
  s390/dump: fix old lowcore virtual vs physical address confusion
  s390/lgr: use simple assignment instead of memcpy
  s390/dump: fix os_info virtual vs physical address confusion
  s390/sclp_sdias: fix sclp_sdias_copy() virtual vs physical address confusion
  s390/maccess: fix absolute lowcore virtual vs physical address confusion
  s390/ftrace: verify opcode before applying patch
  s390: remove invalid email address of Heiko Carstens
  s390/vfio-ap: add s390dbf logging to the vfio_ap_irq_enable function
  s390/vfio-ap: add s390dbf logging to the handle_pqap function
  MAINTAINERS: update file path for S390 VFIO AP DRIVER
  s390-vfio-ap: introduces s390 kernel debug feature for vfio_ap device driver

Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>