[Bug 1375833] Re: ppc64_cpu --smt=on doesn't work when running a KVM VM

[Chris J Arges]

** Description changed:

  [Test Case]
+ 
+ 0) sudo modprobe kvm-hv
  
  1) Disable smt using:
    ppc64_cpu --smt=off
  
  2) Start a KVM VM with something like the following:
  qemu-system-ppc64 -enable-kvm -M pseries -cpu host -smp cores=8,threads=1 <more parameters>
  
  3) Try to enable smt while the VM is running:
    ppc64_cpu --smt=on
  
  --
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: powerpc-ibm-utils 1.2.21-1
  ProcVersionSignature: User Name 3.16.0-19.26-generic 3.16.3
  Uname: Linux 3.16.0-19-generic ppc64le
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: ppc64el
  Date: Tue Sep 30 14:32:28 2014
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 5.50 6.48 6.30 8/1376 124674
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-1
  ProcVersion: Linux version 3.16.0-19-generic (rtg at gloin) (gcc version 4.9.1 (User Name 4.9.1-4ubuntu1) ) #26 SMP Sat Sep 27 13:45:06 UTC 2014
  SourcePackage: powerpc-ibm-utils
  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

** Changed in: powerpc-ibm-utils (Ubuntu)
   Importance: Undecided => Medium

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to powerpc-ibm-utils in Ubuntu.
https://bugs.launchpad.net/bugs/1375833

Title:
  ppc64_cpu --smt=on doesn't work when running a KVM VM

Status in “powerpc-ibm-utils” package in Ubuntu:
  New

Bug description:
  [Test Case]

  0) sudo modprobe kvm-hv

  1) Disable smt using:
    ppc64_cpu --smt=off

  2) Start a KVM VM with something like the following:
  qemu-system-ppc64 -enable-kvm -M pseries -cpu host -smp cores=8,threads=1 <more parameters>

  3) Try to enable smt while the VM is running:
    ppc64_cpu --smt=on

  --

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: powerpc-ibm-utils 1.2.21-1
  ProcVersionSignature: User Name 3.16.0-19.26-generic 3.16.3
  Uname: Linux 3.16.0-19-generic ppc64le
  ApportVersion: 2.14.7-0ubuntu2
  Architecture: ppc64el
  Date: Tue Sep 30 14:32:28 2014
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcLoadAvg: 5.50 6.48 6.30 8/1376 124674
  ProcSwaps:
   Filename				Type		Size	Used	Priority
   /swap.img                               file		8388544	0	-1
  ProcVersion: Linux version 3.16.0-19-generic (rtg at gloin) (gcc version 4.9.1 (User Name 4.9.1-4ubuntu1) ) #26 SMP Sat Sep 27 13:45:06 UTC 2014
  SourcePackage: powerpc-ibm-utils
  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

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/powerpc-ibm-utils/+bug/1375833/+subscriptions