OSXKVMGVTPASSTHROUGH

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Install Prerequisite packages:

$ sudo apt-get install qemu uml-utilities virt-manager git \
    wget libguestfs-tools p7zip-full make dmg2img -y
$ cat kvm.conf 
options kvm_intel nested=1
options kvm_intel emulate_invalid_guest_state=0
options kvm ignore_msrs=1 report_ignored_msrs=0
$ sudo cp kvm.conf /etc/modprobe.d/
$ echo 1 | sudo tee /sys/module/kvm/parameters/ignore_msrs
$ sudo usermod -aG kvm $(whoami)
$ sudo usermod -aG libvirt $(whoami)
$ sudo usermod -aG input $(whoami)

Clone related repository:

git clone https://github.com/vivekmiyani/OSX_GVT-D
git clone --recursive https://github.com/kholia/OSX-KVM.git
cd OSX-KVM
git checkout 88154b5bac079473660afc2a89704874cc7edf03

Choose Monterey for downloading:

$ ./fetch-macOS-v2.py 
1. High Sierra (10.13)
2. Mojave (10.14)
3. Catalina (10.15)
4. Big Sur (11.6) - RECOMMENDED
5. Monterey (latest)

Choose a product to download (1-5): 5
Monterey (latest)

Format the disk and install macos in kvm:

dmg2img -i BaseSystem.dmg BaseSystem.img
qemu-img create -f qcow2 mac_hdd_ng.img 128G
./OpenCore-Boot.sh