Merge tag 'pull-request-2024-06-24' of https://gitlab.com/thuth/qemu into staging

* s390x error reporting clean ups
* fix memleak in qos_fuzz.c
* use correct byte order for pid field in s390x dumps
* Add a CONFIG switch to disable legacy s390x CPUs

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# gpg: Signature made Mon 24 Jun 2024 02:01:08 AM PDT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]

* tag 'pull-request-2024-06-24' of https://gitlab.com/thuth/qemu:
  target/s390x: Add a CONFIG switch to disable legacy CPUs
  MAINTAINERS: Cover all tests/qtest/migration-* files
  target/s390x/arch_dump: use correct byte order for pid
  tests/qtest/fuzz: fix memleak in qos_fuzz.c
  vfio/{ap, ccw}: Use warn_report_err() for IRQ notifier registration errors
  vfio/ccw: Fix the missed unrealize() call in error path
  vfio/ccw: Use the 'Error **errp' argument of vfio_ccw_realize()
  s390x/css: Make S390CCWDeviceClass::realize return bool
  hw/s390x/ccw: Remove local Error variable from s390_ccw_realize()
  s390x/css: Make CCWDeviceClass::realize return bool
  hw/s390x/ccw: Make s390_ccw_get_dev_info() return a bool

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>