pmu-overflow-interrupt in ubuntu_kvm_unit_tests failed with B-4.15 ARM64

[Po-Hsu Lin]

Issue found on 4.15.0-157.164 with ARM64 node appleton-kernel

Test failed with:
 FAIL: pmu: pmu-overflow-interrupt: overflow interrupts expected on #0 and #1
 FAIL: pmu: pmu-overflow-interrupt: no overflow interrupt expected on 32b boundary
 FAIL: pmu: pmu-overflow-interrupt: expect overflow interrupt on odd counter

Test log:
Running '/home/ubuntu/autotest/client/tmp/ubuntu_kvm_unit_tests/src/kvm-unit-tests/tests/pmu-overflow-interrupt'
 BUILD_HEAD=c7ab4ae3
 timeout -k 1s --foreground 90s /usr/bin/qemu-system-aarch64 -nodefaults -machine virt,gic-version=host,accel=kvm -cpu host -device virtio-serial-device -device virtconsole,chardev=ctd -chardev testdev,id=ctd -device pci-testdev -display none -serial stdio -kernel /tmp/tmp.2QXQ1J9vNA -smp 1 -append pmu-overflow-interrupt # -initrd /tmp/tmp.nMDCR9pH8u
 INFO: PMU version: 0x1
 INFO: PMU implementer/ID code: 0x41("A")/0x2
 INFO: Implements 6 event counters
 PASS: pmu: pmu-overflow-interrupt: no overflow interrupt after preset
 PASS: pmu: pmu-overflow-interrupt: no overflow interrupt after counting
 INFO: pmu: pmu-overflow-interrupt: overflow=0x2
 FAIL: pmu: pmu-overflow-interrupt: overflow interrupts expected on #0 and #1
 FAIL: pmu: pmu-overflow-interrupt: no overflow interrupt expected on 32b boundary
 FAIL: pmu: pmu-overflow-interrupt: expect overflow interrupt on odd counter
 SUMMARY: 5 tests, 3 unexpected failures
 FAIL pmu-overflow-interrupt (5 tests, 3 unexpected failures)

[Po-Hsu Lin (cypressyew)]

With kvm-unit-test repo updated to d8a4f9e5 (ci: Update the list of tests that we run in the Fedora Cirrus-CI), this test is still failing with the same error message.