Merge remote-tracking branch 'remotes/thuth/tags/pull-request-2021-10-15' into staging

* Check kernel command line size on s390x
* Simplification of one of the SIGP instructions on s390x
* Cornelia stepping down as maintainer in some subsystems
* Update the dtc submodule to a proper release version

# gpg: Signature made Fri 15 Oct 2021 02:11:13 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]

* remotes/thuth/tags/pull-request-2021-10-15:
  dtc: Update to version 1.6.1
  s390x virtio-ccw machine: step down as maintainer
  s390x/kvm: step down as maintainer
  vfio-ccw: step down as maintainer
  s390x: sigp: Force Set Architecture to return Invalid Parameter
  s390x/ipl: check kernel command line size

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

diff --combined MAINTAINERS
index cfefe386ea5afb2cd3146bde72b5418c64c7233f,c25793bc393e5cc261c38cf5e00d79a2a43279fb..9e9f489a41f7a7515d95bf83ccb7ee0e890050dc
--- 1/MAINTAINERS
--- 2/MAINTAINERS
+++ b/MAINTAINERS
@@@ -393,7 -393,6 +393,6 @@@ F: target/ppc/kvm.
  
  S390 KVM CPUs
  M: Halil Pasic <pasic@linux.ibm.com>
- M: Cornelia Huck <cohuck@redhat.com>
  M: Christian Borntraeger <borntraeger@de.ibm.com>
  S: Supported
  F: target/s390x/kvm/
@@@ -408,7 -407,6 +407,6 @@@ F: hw/intc/s390_flic.
  F: hw/intc/s390_flic_kvm.c
  F: include/hw/s390x/s390_flic.h
  F: gdb-xml/s390*.xml
- T: git https://gitlab.com/cohuck/qemu.git s390-next
  T: git https://github.com/borntraeger/qemu.git s390-next
  L: qemu-s390x@nongnu.org
  
@@@ -417,10 -415,7 +415,10 @@@ M: Paolo Bonzini <pbonzini@redhat.com
  M: Marcelo Tosatti <mtosatti@redhat.com>
  L: kvm@vger.kernel.org
  S: Supported
 +F: docs/amd-memory-encryption.txt
 +F: docs/system/i386/sgx.rst
  F: target/i386/kvm/
 +F: target/i386/sev*
  F: scripts/kvm/vmxcap
  
  Guest CPU Cores (other accelerators)
@@@ -1514,7 -1509,6 +1512,6 @@@ F: tests/acceptance/machine_sparc_leon3
  S390 Machines
  -------------
  S390 Virtio-ccw
- M: Cornelia Huck <cohuck@redhat.com>
  M: Halil Pasic <pasic@linux.ibm.com>
  M: Christian Borntraeger <borntraeger@de.ibm.com>
  S: Supported
@@@ -1526,7 -1520,6 +1523,6 @@@ F: hw/watchdog/wdt_diag288.
  F: include/hw/watchdog/wdt_diag288.h
  F: configs/devices/s390x-softmmu/default.mak
  F: tests/acceptance/machine_s390_ccw_virtio.py
- T: git https://gitlab.com/cohuck/qemu.git s390-next
  T: git https://github.com/borntraeger/qemu.git s390-next
  L: qemu-s390x@nongnu.org
  
@@@ -1865,7 -1858,6 +1861,6 @@@ F: docs/igd-assign.tx
  F: docs/devel/vfio-migration.rst
  
  vfio-ccw
- M: Cornelia Huck <cohuck@redhat.com>
  M: Eric Farman <farman@linux.ibm.com>
  M: Matthew Rosato <mjrosato@linux.ibm.com>
  S: Supported
@@@ -1873,7 -1865,6 +1868,6 @@@ F: hw/vfio/ccw.
  F: hw/s390x/s390-ccw.c
  F: include/hw/s390x/s390-ccw.h
  F: include/hw/s390x/vfio-ccw.h
- T: git https://gitlab.com/cohuck/qemu.git s390-next
  L: qemu-s390x@nongnu.org
  
  vfio-ap
@@@ -2505,7 -2496,6 +2499,7 @@@ Memory AP
  M: Paolo Bonzini <pbonzini@redhat.com>
  M: Peter Xu <peterx@redhat.com>
  M: David Hildenbrand <david@redhat.com>
 +R: Philippe Mathieu-Daudé <philmd@redhat.com>
  S: Supported
  F: include/exec/ioport.h
  F: include/exec/memop.h