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<div class="moz-text-flowed" style="font-family: -moz-fixed;
font-size: 14px;" lang="x-unicode">Hi,
<br>
<br>
I have some questions about the CPU-Capabilities for
Virtualization especially for Nested Virtualization like the
Turtles Project.
<br>
I am trying to create a Nested Environment by following the
instruction of: <a class="moz-txt-link-freetext"
href="http://kashyapc.wordpress.com/2012/01/18/nested-virtualization-with-kvm-and-amd/">http://kashyapc.wordpress.com/2012/01/18/nested-virtualization-with-kvm-and-amd/</a>
<br>
<br>
The bare-metal system is a Dell Server with following CPU-Flags
(virsh capabilities)
<br>
<br>
<cpu>
<br>
<arch>x86_64</arch>
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<model>Opteron_G4</model>
<br>
<vendor>AMD</vendor>
<br>
<topology sockets='1' cores='8' threads='2'/>
<br>
<feature name='nodeid_msr'/>
<br>
<feature name='wdt'/>
<br>
<feature name='skinit'/>
<br>
<feature name='ibs'/>
<br>
<feature name='osvw'/>
<br>
<feature name='cr8legacy'/>
<br>
<feature name='extapic'/>
<br>
<feature name='cmp_legacy'/>
<br>
<feature name='fxsr_opt'/>
<br>
<feature name='mmxext'/>
<br>
<feature name='osxsave'/>
<br>
<feature name='monitor'/>
<br>
<feature name='ht'/>
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<feature name='vme'/>
<br>
</cpu>
<br>
<br>
After adding this Flags to the XML of my first VM, the following
XML-Attributes are written to the file, after reopening it.
<br>
<br>
<br>
<cpu mode='custom' match='exact'>
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<model fallback='allow'>Opteron_G4</model>
<br>
<vendor>AMD</vendor>
<br>
<feature policy='require' name='nodeid_msr'/>
<br>
<feature policy='require' name='wdt'/>
<br>
<feature policy='require' name='skinit'/>
<br>
<feature policy='require' name='ibs'/>
<br>
<feature policy='require' name='osvw'/>
<br>
<feature policy='require' name='cr8legacy'/>
<br>
<feature policy='require' name='extapic'/>
<br>
<feature policy='require' name='cmp_legacy'/>
<br>
<feature policy='require' name='fxsr_opt'/>
<br>
<feature policy='require' name='mmxext'/>
<br>
<feature policy='require' name='osxsave'/>
<br>
<feature policy='require' name='monitor'/>
<br>
<feature policy='require' name='ht'/>
<br>
<feature policy='require' name='vme'/>
<br>
</cpu>
<br>
<br>
<br>
The problem is, that after adding this attributes to the XML, I am
not able to load the kvm-modules in the VM. So I´m not able to
install the Nested VM in the VM.
<br>
But when I´m not adding the attributes to the XML and keep the
XML-File of the VM unmodified, I´m able to load the KVM modules in
the VM and I can install the Nested Guest.
<br>
<br>
So my first question is, what difference it makes for the Nested
Virtualization, when I´m not adding the Attributes and keep the
XML-Files unmodified?
<br>
<br>
And my second qestion is, what essential difference is between the
qemu version 0.14 which was used by the instruction of Kashyap
Chamarthy and the version 1.0 related to Nested Virtualization?
<br>
<br>
I hope you understand my problem because it is quite confusing for
me and I´m not sure that I´m using the right techniqe for my
Nested Environment!! <span class="moz-smiley-s3" title=";-)"></span>
<br>
<br>
Best Regards,
<br>
<br>
Mike
<br>
<br>
<br>
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