[libvirt-users] CPU Flags libvirt 0.9.12
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. Cheers, Mike
On 08/03/12 16:35, 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.
The output is correct as libvirt tries to find a "parent" processor and the flags that are in your output are just flags that your processor supports and the parent, in this case Opteron G4, doesn't. Peter
Cheers, Mike
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Am 03.08.2012 17:20, schrieb Peter Krempa:
On 08/03/12 16:35, 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.
The output is correct as libvirt tries to find a "parent" processor and the flags that are in your output are just flags that your processor supports and the parent, in this case Opteron G4, doesn't.
Peter
Cheers, Mike
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Hmm sorry , I did not get the point so far! In the XML-File of the VM I´m using the cpu passthrough attribute so that most of the flags from the host cpu are available in the VM. So exectuing cat /proc/cpuinfo in the VM shows exactly the same CPU-model like on the Host, there are only some flags missing, but for example the SVM Flag which I need for the Virtualization is listed in the VM and on the host system too. So I´m quite confused about the output of virsh capabilities!
participants (2)
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Michael Beham -
Peter Krempa