Lots of docs on how to build PAN-OS VM-Series in KVM for production with SR-IOV and DPDK etc, but very little about
how to run it with purely for testing without those dataplane features.

Define all interfaces with nic type of 'virtio'

admin@panos-gw-01> debug show vm-series interfaces all

Interface_name       Base-OS_port       Base-OS_MAC             PCI-ID         Driver
 mgt                     eth0          52:54:00:1e:00:00                      virtio_net
 Ethernet1/1             eth1          52:54:00:1e:00:0c       0000:00:04.0   virtio_net
 Ethernet1/2             eth2          52:54:00:1e:00:0d       0000:00:05.0   virtio_net

 Turn off dpdk-pkt-io mode

 admin@panos-gw-01> set system setting dpdk-pkt-io off
Enabling/disabling DPDK Packet IO mode requires a device reboot. Do you want to continue? (y or n)

Device is already in non-DPDK IO mode
admin@panos-gw-01>

admin@panos-gw-01> show system setting dpdk-pkt-io

Device current Packet IO mode:                 Packet MMAP
Device DPDK Packet IO capable:                 yes
Device default Packet IO mode:                 DPDK