vifo config

machines/levitation/configuration.nix

@@ -6,6 +6,7 @@ let
     inherit system;
   };
 in {
+  imports = [ ./passthrough.nix ];
   # Sops setup for this machine
   sops.secrets = {
     "borg-ssh-key" = {
@@ -79,8 +80,6 @@ in {
       allowedUDPPorts = [ 61377 1701 9001 ];
     };
   };
-  # GPU passthrough
-  boot.kernelParams = [ "amd_iommu=on" ];
 
   # Setup home manager
   home-manager.users.nathan = import ./home.nix;

machines/levitation/passthrough.nix

@@ -0,0 +1,35 @@
+{ config, lib, pkgs, ... }:
+let
+  gpuIDs = [
+    # 2080 super
+    "10de:1e81" # Graphics
+    "10de:10f8" # Audio
+    "10de:1ad8" # Usb ????
+    "10de:1ad9" # Usb ????
+  ];
+in {
+  boot = {
+    kernelParams = [
+      # enable iommu
+      "amd_iommu=on"
+      # Isolate the nvidia gpu
+      ("vfio-pci.ids=" + lib.concatStringsSep "," gpuIDs)
+    ];
+    # Modules needed
+    initrd.kernelModules = [ "vfio_pci" "vfio" "vfio_iommu_type1" ];
+  };
+
+  environment.systemPackages = with pkgs; [ looking-glass-client ];
+  virtualisation.spiceUSBRedirection.enable = true;
+  virtualisation.libvirtd = {
+    qemu = {
+      swtpm.enable = true;
+      ovmf = {
+        enable = true;
+        packages = [ pkgs.OVMFFull.fd ];
+      };
+    };
+  };
+  systemd.tmpfiles.rules =
+    [ "f /dev/shm/looking-glass 0660 nathan qemu-libvirtd -" ];
+}

modules/linux/virtualization.nix

@@ -6,6 +6,7 @@ in with lib; {
       # Enable the kernel modules
       boot.kernelModules = [ "kvm-amd" "kvm-intel" ];
       # Enable libvirt
+      programs.dconf.enable = true;
       virtualisation.libvirtd.enable = true;
       # Install virt-manager
       environment.systemPackages = with pkgs; [ virtmanager virt-viewer ];