Implement the Service-Call Logical Processor (SCLP) event
type Control-Program Identification (CPI) in QEMU.

Changed since v2:
- Add SPDX license tag in the new file hw/s390x/sclpcpi.c
- Store the control-program Identification data in the sclpcpi device
- Update the description of CPI attributes
- Use ldq_be_p() intead of be64_to_cpu() 	
- Return the CPI attribute system-level as an integer in QMP
- Add compat handling for backward migration
- Other minor changes

Shalini Chellathurai Saroja (4):
  hw/s390x: add SCLP event type CPI
  hw/s390x: add Control-Program Identification to QOM
  hw/s390x: support migration of CPI data
  hw/s390x: compat handling for backward migration

 hw/s390x/event-facility.c         |  28 ++++-
 hw/s390x/meson.build              |   1 +
 hw/s390x/s390-virtio-ccw.c        |   1 +
 hw/s390x/sclpcpi.c                | 196 ++++++++++++++++++++++++++++++
 include/hw/s390x/event-facility.h |  12 ++
 qapi/machine.json                 |  58 +++++++++
 6 files changed, 295 insertions(+), 1 deletion(-)
 create mode 100644 hw/s390x/sclpcpi.c

-- 
2.47.0