add end script

hosts/focalor/hardware.nix

···
     ];
 
   boot.initrd.availableKernelModules = [ "nvme" "xhci_pci" "ahci" "uas" "usbhid" "sd_mod" ];
-  boot.initrd.kernelModules = [ ];
+  boot.initrd.kernelModules = [ "vfio" "vfio_iommu_type1" "vfio_pci"  ];
   boot.kernelModules = [ "kvm-amd" ];
+  boot.kernelParams = [
+    "amd_iommu=on"
+    "vfio-pci.ids=10de:2484,10de228b,1022:149c,15b7:5045,1dbe:5236,1022:149c"
+  ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =

hosts/focalor/scripts/end.sh

···
+#!/usr/bin/env bash
+set -x
+
+virsh nodedev-reattach pci_0000_0a_00_0
+virsh nodedev-reattach pci_0000_0a_00_1
+virsh nodedev-reattach pci_0000_06_00_1
+virsh nodedev-reattach pci_0000_06_00_3
+virsh nodedev-reattach pci_0000_0c_00_3
+
+modprobe -r vfio-pci
+
+modprobe nvidia_modeset
+modprobe nvidia_uvm
+modprobe nvidia_drm
+modprobe nvidia
+
+modprobe -r xhci_pci
+modprobe xhci_pci
+
+systemctl restart display-manager

hosts/focalor/vfio.nix

···
         }).fd];
       };
     };
+    hooks.qemu = {
+      end = "./scripts/end.sh";
+    };
   };
 
   users.extraUsers.regent.extraGroups = [ "libvirtd" ];