[libvirt-users] Opteron_G4 CPU under libvirt 0.9.12

[Jiri Denemark]

On Fri, Aug 03, 2012 at 16:29:06 +0200, Michael Beham wrote:
> Hi,
> 
> I´m using libvirt version 0.9.12 under Debian Squeeze with and AMD 
> Opteron 4280. Executing the virsh capabilities command only show me the 
> following flags:
> 
> <cpu>
> <arch>x86_64</arch>
> <model>Opteron_G4</model>
> <vendor>AMD</vendor>
> <topology sockets='1' cores='8' threads='2'/>
> <feature name='nodeid_msr'/>
> <feature name='wdt'/>
> <feature name='skinit'/>
> <feature name='ibs'/>
> <feature name='osvw'/>
> <feature name='cr8legacy'/>
> <feature name='extapic'/>
> <feature name='cmp_legacy'/>
> <feature name='fxsr_opt'/>
> <feature name='mmxext'/>
> <feature name='osxsave'/>
> <feature name='monitor'/>
> <feature name='ht'/>
> <feature name='vme'/>
> </cpu>
> 
> Should not there be more flags supported by the CPU, for example the 
> SVM-Flag for virtualization because executing cat /proc/cpuinfo gives me 
> quite a lot of more flags and also the SVM Flag.

To keep the list short, libvirt only explicitly prints features that are not
covered by a CPU model. CPU features included in a particular CPU model can be
found in /usr/share/libvirt/cpu_map.xml. When expanded, your CPU is:

  <feature name='nodeid_msr'/>
  <feature name='wdt'/>
  <feature name='skinit'/>
  <feature name='ibs'/>
  <feature name='osvw'/>
  <feature name='cr8legacy'/>
  <feature name='extapic'/>
  <feature name='cmp_legacy'/>
  <feature name='fxsr_opt'/>
  <feature name='mmxext'/>
  <feature name='osxsave'/>
  <feature name='monitor'/>
  <feature name='ht'/>
  <feature name='vme'/>

  <!-- included in Opteron_G4 -->
  <feature name='pclmuldq'/>
  <feature name='ssse3'/>
  <feature name='sse4.1'/>
  <feature name='sse4.2'/>
  <feature name='popcnt'/>
  <feature name='aes'/>
  <feature name='xsave'/>
  <feature name='avx'/>
  <feature name='pdpe1gb'/>
  <feature name='abm'/>
  <feature name='sse4a'/>
  <feature name='misalignsse'/>
  <feature name='3dnowprefetch'/>
  <feature name='xop'/>
  <feature name='fma4'/>

  <!-- inherited from Opteron_G2 -->
  <feature name='cx16'/>
  <feature name='rdtscp'/>
  <feature name='lahf_lm'/>
  <feature name='svm'/>

  <!-- inherited from Opteron_G1 -->
  <!-- inherited from cpu64-rhel5 -->
  <feature name='syscall'/>
  <feature name='nx'/>
  <feature name='lm'/>

  <!-- inherited from kvm32 -->
  <feature name='mtrr'/>
  <feature name='mca'/>
  <feature name='pse36'/>
  <feature name='clflush'/>

  <!-- inherited from qemu32 -->
  <feature name='pni'/>

  <!-- inherited from pentiumpro -->
  <feature name='fpu'/>
  <feature name='de'/>
  <feature name='pse'/>
  <feature name='tsc'/>
  <feature name='msr'/>
  <feature name='pae'/>
  <feature name='mce'/>
  <feature name='cx8'/>
  <feature name='apic'/>
  <feature name='sep'/>
  <feature name='pge'/>
  <feature name='cmov'/>
  <feature name='pat'/>
  <feature name='mmx'/>
  <feature name='fxsr'/>
  <feature name='sse'/>
  <feature name='sse2'/>

Jirka