Re: [libvirt-users] [libvirt] xml config nested
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On Thu, Jan 05, 2017 at 11:44:29AM +0800, 放牛班的春天 wrote:
How to configure libvirt, so qemu-kvm support nested virtualization,
virtual machine installed operating system is windows_7_ultimate_sp1_x64_dvd_618537.iso,
configure libvirt xml file is as follows:
<cpu mode='custom' match='exact'>
<model fallback='allow'>core2duo</model>
<feature policy='require' name='vmx'/>
</cpu>
or
<cpu mode='host-model'>
<model fallback='allow'/>
</cpu>
or
<cpu mode='host-passthrough'>
<topology sockets='2' cores='2' threads='2'/>
</cpu>
Yes, that's the key guest configuration step - exposing the 'vmx' feature
to the guest.
In addition to that though, you need to make sure the kvm-intel kernel
module in your host has the "nested=1" parameter set.
eg in /etc/modprobe.d/kvm.conf you want
options kvm_intel nested=1
If loaded correctly you should see
# cat /sys/module/kvm_intel/parameters/nested
Y
if it says "N", then nested VMX will be disabled.
Regards,
Daniel
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