intel SR-IOV虚拟显卡

https://wiki.wbuntu.com/linux/pve/5-kvm-virtual-machine/5-2-intel-igpu-sr-iov/
https://www.reddit.com/r/VFIO/comments/139vu5w/code_43_with_intel_igpu_uhd_770_via_sriov_or/

1. 开启虚拟显卡
   echo 1 > /sys/devices/pci0000:00/0000:00:02.0/sriov_numvfs
2. 查看虚拟显卡
   lspci -knn|grep VGA|grep Intel