Hello to everyone.

I'm trying to virtualize FreeBSD 13.2 for arm 32 bit on my laptop ARM Chromebook where KVM is enabled,libvirt and virt-manager are installed from the source code and everything work great. The Host OS is Devuan 5. Infact , using these qemu parameters,FreeBSD is able to boot entirely :

DISK=/Dati/img/FreeBSD-13.2-RELEASE-arm-armv7-GENERICSD.img

qemu-system-arm \
-enable-kvm -serial stdio \
 -m 1024 -M virt -cpu cortex-a15 \
-drive if=pflash,format=raw,unit=0,file=$UEFICODE \
-drive if=pflash,format=raw,unit=1,file=$UEFIVARS \
-drive file=$DISK,media=disk,format=raw \
-device i82559b,netdev=net0,mac="52:54:00:12:34:55" \
-netdev type=user,id=net0 \
-device virtio-gpu-pci \
-usb -device nec-usb-xhci \
-device usb-kbd -device usb-mouse \
-device vmware-svga,id=video0,vgamem_mb=16


As you can see from this boot log messages :


https://pastebin.ubuntu.com/p/DWggdRRxVv/


So,this argument is good :


    -drive file=$DISK,media=disk,format=raw \


but these arguments used by libvirt aren't able to boot FreeBSD because the virtio disk attached is not recognized (I also tried with 
a SATA disk and it is not regognized as well) :

<disk type="file" device="disk">
  <driver name="qemu" type="raw"/>
  <source file="/Dati/img/FreeBSD-13.2-RELEASE-arm-armv7-GENERICSD.img"/>
  <target dev="vda" bus="virtio"/>
  <address type="pci" domain="0x0000" bus="0x04" slot="0x00" function="0x0"/>
</disk>

as you can see :


Screenshot_2023-09-29_10-44-06.png


What's the difference ? Do you have some vague idea about the reason ? I don't know if the cause is related to libvirt or to FreeBSD,so I'm trying to exclude one of these.

--
Mario.