Update polaris-vfio-startup.sh: added novueau, amdgpu-pro, as well as i915(Intel integrated graphics) kernel module to be unloaded just in-case someone is using those drivers.

vfio-teardown.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -x
+
+echo "Beginning of teardown!"
+
+# Unload VFIO-PCI Kernel Driver
+modprobe -r vfio-pci
+modprobe -r vfio_iommu_type1
+modprobe -r vfio
+
+# Re-Bind GPU to AMD Driver
+virsh nodedev-reattach pci_0000_01_00_1
+virsh nodedev-reattach pci_0000_01_00_0
+
+# Rebind VT consoles
+if test -e "/sys/class/vtconsole/vtcon0/bind" ; then
+    echo 1 > /sys/class/vtconsole/vtcon0/bind
+fi
+if test -e "/sys/class/vtconsole/vtcon1/bind" ; then
+    echo 1 > /sys/class/vtconsole/vtcon1/bind
+fi
+
+# Hack that magically makes nvidia gpus work :)
+if command -v nvidia-xconfig ; then
+    nvidia-xconfig --query-gpu-info > /dev/null 2>&1
+fi
+
+# Re-Bind EFI-Framebuffer
+if test -e "/sys/bus/platform/drivers/efi-framebuffer/bind" ; then
+    echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
+else
+    echo "Could not find framebuffer to bind!"
+fi
+
+#Load amd driver
+input="/tmp/vfio-loaded-gpu-modules"
+while read gpuModule; do
+  modprobe "$gpuModule"
+done < "$input"
+
+# Restart Display Manager
+input="/tmp/vfio-store-display-manager"
+while read displayManager; do
+  systemctl start "$displayManager"
+done < "$input"
+
+echo "End of teardown!"