emulator in ubuntu_kvm_unit_tests failed on Power9 with Kinetic 5.19 (FAIL: emulator: 64bit: detected)

[Po-Hsu Lin]

Issue found with Kinetic 5.19.0-15.15 with Power9 node baltar

Test failed with:
 FAIL: emulator: 64bit: detected

 START ubuntu_kvm_unit_tests.emulator ubuntu_kvm_unit_tests.emulator timestamp=1659540006 timeout=1800 localtime=Aug 03 15:20:06
 Persistent state client._record_indent now set to 2
 Persistent state client.unexpected_reboot now set to ('ubuntu_kvm_unit_tests.emulator', 'ubuntu_kvm_unit_tests.emulator')
 Waiting for pid 7795 for 1800 seconds
 System python is too old, crash handling disabled
 Running 'kvm-ok'
  INFO: /dev/kvm exists
  KVM acceleration can be used
 Running 'ppc64_cpu --smt=off'
 Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/emulator'
 BUILD_HEAD=16647354
 timeout -k 1s --foreground 90s /usr/bin/qemu-system-ppc64 -nodefaults -machine pseries,accel=kvm -bios /tmp/tmp.rwxQve2ckt -display none -serial stdio -kernel /tmp/tmp.HchqrHGkSk -smp 1 # -initrd /tmp/tmp.kbJZslOZrw
 FAIL: emulator: 64bit: detected
 PASS: emulator: invalid: exception
 PASS: emulator: lswx: alignment
 PASS: emulator: lswi: alignment
 SUMMARY: 4 tests, 1 unexpected failures

 EXIT: STATUS=3
 FAIL emulator (4 tests, 1 unexpected failures)