Operating VirtualBox on Win10 with KVM Nested

My current environment is Ubuntu 20.04.
CPU: AMD 3950X

I want to install and operate VirtualBox on Win10 using KVM Nested.

Host: Ubuntu 20.04
L1: Windows10
L2: VirtualBox(Win10 Or Win7)

Neste setting situation

kimcar@kimcar-Ubuntu:~$ cat /proc/cpuinfo | grep -c svm
32
kimcar@kimcar-Ubuntu:~$ cat /sys/module/kvm_amd/parameters/nested
1
kimcar@kimcar-Ubuntu:~$ cat /etc/modprobe.d/qemu-system-x86.conf
options kvm_amd nested=1
kimcar@kimcar-Ubuntu:~$

L1 XML Setting

Windows10_GAME
853e7548-3870-4587-a64a-0270b79d8924

8392704
8392704
8
2

hvm
/usr/share/OVMF/OVMF_CODE.fd
/var/lib/libvirt/qemu/nvram/Windows10_GAME_VARS.fd

destroy
restart
destroy

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I searched for various information and tried it, but the symptom of turning on and stopping when running the Client in VirtualBox keeps appearing.

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Author: Chul Hwam Kim