Merge tag 'pull-request-2023-07-24' of https://gitlab.com/thuth/qemu into staging

* Fix emulation of s390x instructions: CKSM, CLM, ICM, MC, CLGEBR(A)
* Remove useless and non-working s390x migration avocado tests
* Fix loongarch CSRRD CPUID instruction when running on s390x hosts
* Disable flaky s390x virtio-gpu test by default

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# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
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* tag 'pull-request-2023-07-24' of https://gitlab.com/thuth/qemu:
  tests/avocado/machine_s390_ccw_virtio: Skip the flaky virtio-gpu test by default
  target/loongarch: Fix the CSRRD CPUID instruction on big endian hosts
  tests/avocado/migration: Remove the malfunctioning s390x tests
  tests/tcg/s390x: Test VCKSM
  tests/tcg/s390x: Test STPQ
  tests/tcg/s390x: Test MC
  tests/tcg/s390x: Test ICM
  tests/tcg/s390x: Test CLM
  tests/tcg/s390x: Test CLGEBR and CGEBRA
  tests/tcg/s390x: Test CKSM
  target/s390x: Fix assertion failure in VFMIN/VFMAX with type 13
  target/s390x: Make MC raise specification exception when class >= 16
  target/s390x: Fix ICM with M3=0
  target/s390x: Fix CONVERT TO LOGICAL/FIXED with out-of-range inputs
  target/s390x: Fix CLM with M3=0
  target/s390x: Make CKSM raise an exception if R2 is odd

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>