kvm启用virtio驱动

sudo qemu-system-x86_64 -m 512 -drive file=pathX/winxp.img,cache=writeback,if=virtio,boot=on -cdrom /xxx/virtio-win-1.1.16.iso -net nic,model=virtio -net user -vnc :1 启动后会提示网卡安装。