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[Bug 1723904] Re: ubuntu-kvm-unit test failed with sprs test on ppc64le

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Launchpad Bug Tracker <1723904@xxxxxxxxxxxxxxxxxx>
Date: Mon, 16 Apr 2018 07:27:45 -0000
Reply-to: Bug 1723904 <1723904@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug was fixed in the package qemu - 1:2.5+dfsg-5ubuntu10.25

---------------
qemu (1:2.5+dfsg-5ubuntu10.25) xenial; urgency=medium

  [ Murilo Opsfelder Araújo ]
  * debian/patches/ubuntu/lp-1723914-ppc64-set-msr-register.patch:
    properly set MSR register for ppc64 targets (LP: #1723914)

  [ Yasmin Beatriz Alves da Silva ]
  * debian/patches/ubuntu/lp-1723904-sprs-backport.patch:
    Fix handling of Power8 special purpose registers (LP: #1723904)

 -- Christian Ehrhardt <christian.ehrhardt@xxxxxxxxxxxxx>  Wed, 04 Apr
2018 12:46:15 +0200

** Changed in: qemu (Ubuntu Xenial)
       Status: Fix Committed => Fix Released

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Title:
  ubuntu-kvm-unit test failed with sprs test on ppc64le

Status in linux package in Ubuntu:
  Confirmed
Status in qemu package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  New
Status in qemu source package in Xenial:
  Fix Released

Bug description:
  [Impact]

   * Certain Guest features (SPRS) of power8 isa are not working

   * This is part of the ongoing LTS HW exploitation and a fixup to some
     verification tests at the same time.

  [Test Case]

   * 1. deploy xenial + HWE kernel on a ppc64el box
     2. sudo apt-get install qemu-kvm -y
     3. git clone --depth=1 https://git.kernel.org/pub/scm/virt/kvm/kvm-unit-tests.git
     4. cd kvm-unit-tests
     5. ./configure --endian=little; make
     6. sudo ppc64_cpu --smt=off
     7. sudo ./run_tests.sh -v

  [Regression Potential]

   * The changes are ppc only and provided by IBM so the potential risk is
     retained to the owner of the Area.
     Further if these registers are not used they do nothing, so in most
     cases it will be a nop.
     OTOH the changes are rather huge (in terms of LOC) so there is some
     risk left.

  [Other Info]

   * n/a

  ---

  The sprs test has failed on ppc64le
  This issue can be spotted on Zesty and Xenial. There is no history for this test on Artful

  $ sudo /bin/bash -c "MIGRATION=yes TESTNAME=sprs TIMEOUT=90s ACCEL= ./powerpc/run powerpc/sprs.elf -smp 1 -append '-w'"
  run_migration timeout -k 1s --foreground 90s /usr/bin/qemu-system-ppc64 -nodefaults -machine pseries,accel=kvm -bios powerpc/boot_rom.bin -display none -serial stdio -kernel powerpc/sprs.elf -smp 1 -append -w # -initrd /tmp/tmp.RUTL6E2JSi
  Settings SPRs to 0xcafefacec0debabe...
  Now migrate the VM, then press a key or send NMI...
  Checking SPRs...
  PASS: SPR 3:	0x0000000000debabe <==> 0x0000000000debabe
  PASS: SPR 13:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 17:	0x0000000000debabe <==> 0x0000000000debabe
  PASS: SPR 18:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 19:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 29:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  FAIL: SPR 61:	0x4054504440541014 <==> 000000000000000000
  PASS: SPR 153:	0x0a00000000000084 <==> 0x0a00000000000084
  PASS: SPR 157:	0xcfffffcfc0cfffff <==> 0xcfffffcfc0cfffff
  FAIL: SPR 159:	0x00000000c0debabe <==> 000000000000000000
  PASS: SPR 256:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 259:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 274:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 275:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 769:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 770:	0xcafefacec006babe <==> 0xcafefacec006babe
  PASS: SPR 771:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 772:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 773:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 774:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 775:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 776:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 779:	0x00000000fa8b1afe <==> 0x00000000fa8b1afe
  PASS: SPR 780:	0xcafefacec0debabc <==> 0xcafefacec0debabc
  PASS: SPR 781:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 782:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  FAIL: SPR 784:	0xcafefacec0debabe <==> 000000000000000000
  PASS: SPR 785:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 786:	0xcafefacec006babe <==> 0xcafefacec006babe
  PASS: SPR 787:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 788:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 789:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 790:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 791:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 792:	0x00000000c0debabe <==> 0x00000000c0debabe
  PASS: SPR 795:	0x00000000fa8b1afe <==> 0x00000000fa8b1afe
  PASS: SPR 796:	0xcafefacec0debabc <==> 0xcafefacec0debabc
  PASS: SPR 797:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 798:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 800:	0x80000000c0000000 <==> 0x80000000c0000000
  PASS: SPR 801:	0x0000000080000000 <==> 0x0000000080000000
  PASS: SPR 802:	0x80000000c0000000 <==> 0x80000000c0000000
  PASS: SPR 803:	0x0000000080000000 <==> 0x0000000080000000
  PASS: SPR 804:	0xcafefacec0debabe <==> 0xcafefacec0debabe
  PASS: SPR 805:	0xcafefacec0debabc <==> 0xcafefacec0debabc
  PASS: SPR 806:	0x80000000c0000000 <==> 0x80000000c0000000
  FAIL: SPR 815:	0xcafefacec0debabe <==> 000000000000000000
  SUMMARY: 47 tests, 4 unexpected failures

  EXIT: STATUS=3

  $ qemu-system-ppc --version
  QEMU emulator version 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.16), Copyright (c) 2003-2008 Fabrice Bellard

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.10.0-37-generic 4.10.0-37.41~16.04.1
  ProcVersionSignature: User Name 4.10.0-37.41~16.04.1-generic 4.10.17
  Uname: Linux 4.10.0-37-generic ppc64le
  ApportVersion: 2.20.1-0ubuntu2.10
  Architecture: ppc64el
  Date: Mon Oct 16 09:16:08 2017
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 0.02 0.14 0.17 1/1464 15093
  ProcLocks:
   1: POSIX  ADVISORY  WRITE 1604 00:14:19651 0 EOF
   2: POSIX  ADVISORY  WRITE 2937 00:14:55331 0 EOF
   3: FLOCK  ADVISORY  WRITE 3046 00:14:67623 0 EOF
   4: POSIX  ADVISORY  WRITE 3124 00:14:57398 0 EOF
   5: POSIX  ADVISORY  WRITE 3047 00:14:87068 0 EOF
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-1
  ProcVersion: Linux version 4.10.0-37-generic (buildd@bos01-ppc64el-026) (gcc version 5.4.0 20160609 (User Name/IBM 5.4.0-6ubuntu1~16.04.4) ) #41~16.04.1-User Name SMP Fri Oct 6 22:44:24 UTC 2017
  SourcePackage: linux-hwe
  UpgradeStatus: No upgrade log present (probably fresh install)
  cpu_cores: Number of cores present = 20
  cpu_coreson: Number of cores online = 20
  cpu_smt: SMT is off

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