tachibana vfio

hosts/tachibana/default.nix

@@ -8,6 +8,7 @@
     ../../system
     ./hardware-configuration.nix
     ./disk.nix
+    ./virt.nix
     inputs.disko.nixosModules.disko
   ];
 

hosts/tachibana/virt.nix

@@ -0,0 +1,31 @@
+{
+  pkgs,
+  config,
+  ...
+}: {
+  virtualisation.libvirtd.qemu.verbatimConfig = ''
+    namespaces = []
+    user = "+1000"
+    cgroup_device_acl = [
+      "/dev/null", "/dev/full", "/dev/zero",
+      "/dev/random", "/dev/urandom",
+      "/dev/ptmx", "/dev/kvm", "/dev/kqemu",
+      "/dev/rtc","/dev/hpet", "/dev/vfio/vfio",
+      "/dev/kvmfr0",
+    ]
+  '';
+  boot = {
+    initrd.kernelModules = ["vfio_pci" "vfio_iommu_type1" "vfio"];
+    kernelModules = ["kvmfr"];
+    kernelParams = ["amd_iommu=on" "amd_iommu=pt" "kvm.ignore_msrs=1"];
+    extraModulePackages = [config.boot.kernelPackages.kvmfr];
+    extraModprobeConfig = ''
+      options vfio-pci ids=10de:2b85,10de:22e8
+      options kvmfr static_size_mb=64
+    '';
+  };
+  services.udev.extraRules = ''
+    SUBSYSTEM=="kvmfr", GROUP="kvm", MODE="0660"
+  '';
+  environment.systemPackages = [pkgs.looking-glass-client];
+}