ubuntu-kernel-tests

ubuntu_kvm_unit_tests: apic: FAIL: x2apic id matches cpuid

Bug #1918689 reported by Stefan Bader
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This bug affects 2 people
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ubuntu-kernel-tests
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Bug Description

Running the kvm_unit_test/apic test suite on rumford fails with: FAIL: x2apic id matches cpuid

18. 03/03 06:39:47 DEBUG| utils:0153| [stdout] PASS: sane x2apic id
19. 03/03 06:39:47 DEBUG| utils:0153| [stdout] FAIL: x2apic id matches cpuid
20. 03/03 06:39:47 DEBUG| utils:0153| [stdout] PASS: correct xapic id after reset

This seems to be a hardware related issue.

Revision history for this message
Guilherme G. Piccoli (gpiccoli) wrote :

Do we have the qemu version used in this test?

Revision history for this message
Guilherme G. Piccoli (gpiccoli) wrote :

Or if it's running directly in a bare-metal, do we have any kernel dmesg entry that correlates to that? Having the full dmesg of a failing and a successful run would be great!

Thanks,

Guilherme

Revision history for this message
Kleber Sacilotto de Souza (kleber-souza) wrote :

Issue found also with xenial/linux-hwe 4.15.0-143.147~16.04.3.

tags: added: hwe sru-20210412 xenial
Revision history for this message
Stefan Bader (smb) wrote :

Found again on gonzo with xenial:linux-hwe (4.15.0-150.155~16.04.1) for sru-20210621.

tags: added: sru-20210621
Krzysztof Kozlowski (krzk)
tags: added: hinted
Po-Hsu Lin (cypressyew)
summary: - apic: FAIL: x2apic id matches cpuid
+ ubuntu_kvm_unit_tests: apic: FAIL: x2apic id matches cpuid
Revision history for this message
Po-Hsu Lin (cypressyew) wrote :

According to the initial commit for this test case:
https://gitlab.com/kvm-unit-tests/kvm-unit-tests/-/commit/a222b5e226404e11e7abc4cd712e263a23acdef8

I think it's something related to the qemu (but it looks like this is for i386?)

QEMU commit 5232d00a041c ("target-i386: Implement CPUID[0xB] (Extended
Topology Enumeration)", 2016-05-12) added initial x2APIC to CPUID.

Revision history for this message
Krzysztof Kozlowski (krzk) wrote :

Found on xenial/linux-aws/4.4.0-1132.146

tags: added: 4.4 aws sru-20210816
Revision history for this message
Krzysztof Kozlowski (krzk) wrote :

Found on 2021.09.27/trusty/linux-azure/4.15.0-1125.138~14.04.1

tags: added: azure sru-20210927 trusty
Revision history for this message
Roxana Nicolescu (roxanan) wrote :

Found on xenial:hwe 4.15.0-211.222~16.04.1

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