Qemu aarch64 setup on a debian host OS

qemu_aarch64

# Do this:  https://web.archive.org/web/20200909020002/https://blahcat.github.io/2018/01/07/building-a-debian-stretch-qemu-image-for-aarch64/
# Mount qcow2 via this instead of qemu-nbd:
# qemu-img convert -f qcow2 image.qcow2 -O raw image_raw.raw 
# sudo losetup /dev/loop0 image_raw.raw
# sudo kpartx -a /dev/loop0
# sudo mkdir /mnt/image && sudo mount /dev/mapper/loop0p1 /mnt/image

qemu-system-aarch64 -smp 2 -M virt -cpu cortex-a57 -m 1G \
    -initrd initrd.img-4.19.0-10-arm64 \
    -kernel vmlinuz-4.19.0-10-arm64 \
    -append "root=/dev/sda2 console=ttyAMA0" \
    -global virtio-blk-device.scsi=off \
    -device virtio-scsi-device,id=scsi \
    -drive file=disk.qcow2,id=rootimg,cache=unsafe,if=none \
    -device scsi-hd,drive=rootimg \
    -nographic -netdev user,id=vmnic,hostfwd=tcp::2222-:22 -device virtio-net-device,netdev=vmnic