Debian 10 Buster
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KVM : Nested KVM2019/07/23

 
Configure nested KVM.
It's possible to install KVM Hypervisor and create virtual machines as nested KVM on KVM host.
[1] Enable the setting for Nested KVM.
# show the current setting ( if the result is [Y], it's OK )

root@dlp:~#
cat /sys/module/kvm_intel/parameters/nested

Y
# if the result is [N], change like follows and reboot the system )

root@dlp:~#
echo 'options kvm_intel nested=1' >> /etc/modprobe.d/qemu-system-x86.conf
[2] Edit the configuration of an existing virtual machine you'd like to set Nested like follows.
That's OK, it's possible to create virtual machine on GuestOS.
# edit VM [debian]

root@dlp:~#
virsh edit debian
# change cpu mode like follows

<cpu mode='
host-passthrough
'>
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