test_vmwrite_vmread in ubuntu_kvm_unit_tests failed on 5.14/5.15

[Po-Hsu Lin]

Issue found on linux-oem-5.14/5.14.0-1004.4

Test failed with:
 filter = -exit_monitor_from_l2_test, test = test_vmwrite_vmread
 Skipping volatile field 4400
 PASS: VMWRITE/VMREAD
 FAIL: VMX_VMCS_ENUM.MAX_INDEX expected: 19, actual: 17

Found a thread for this:
http://lkml.iu.edu/hypermail/linux/kernel/2107.2/07759.html

[Krzysztof Kozlowski (krzk)]

Also on: d2021.10.26/jammy/linux-realtime/5.15.0-1003.3

[Krzysztof Kozlowski (krzk)]

Should be fixed with https://<email address hidden>/ however an updated QEMU is needed, judging by comment in the patch. This probably explains why v5.15, where the fix is included already, still fails on this test.

[Po-Hsu Lin (cypressyew)]

With kvm-unit-test repo updated (upstream head SHA1 745f5eb8bc74c0da) and it seems this issue does not exist anymore (5.14.0-1013.13 F-oem)

Need to double check this on Jammy.

[Krzysztof Kozlowski (krzk)]

Found on:
d2021.10.26/jammy/linux-realtime/5.15.0-1004.4 (node: lagalla.amd64)

[Po-Hsu Lin (cypressyew)]

Found on Jammy Oracle 5.15.0-1001.3 VM.Standard2.1

[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.