55 lines
1.6 KiB
Nix
55 lines
1.6 KiB
Nix
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{ pkgs, config, ... }:
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let
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# Change this to your username.
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user = "joy";
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# Change this to match your system's CPU.
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platform = "amd";
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# Change this to specify the IOMMU ids you wrote down earlier.
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vfioIds = [ "10de:249c" "10de:228b" ];
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in {
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# Configure kernel options to make sure IOMMU & KVM support is on.
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boot = {
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kernelModules = [ "kvm-${platform}" "vfio_virqfd" "vfio_pci" "vfio_iommu_type1" "vfio" ];
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kernelParams = [ "${platform}_iommu=on" "${platform}_iommu=pt" "kvm.ignore_msrs=1" ];
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extraModprobeConfig = "options vfio-pci ids=${builtins.concatStringsSep "," vfioIds}";
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};
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# Add a file for looking-glass to use later. This will allow for viewing the guest VM's screen in a
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# performant way.
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systemd.tmpfiles.rules = [
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"f /dev/shm/looking-glass 0660 ${user} qemu-libvirtd -"
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];
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# Add virt-manager and looking-glass to use later.
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environment.systemPackages = with pkgs; [
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virt-manager
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looking-glass-client
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];
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# Enable virtualisation programs. These will be used by virt-manager to run your VM.
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virtualisation = {
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libvirtd = {
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enable = true;
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extraConfig = ''
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user="${user}"
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'';
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# Don't start any VMs automatically on boot.
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onBoot = "ignore";
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# Stop all running VMs on shutdown.
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onShutdown = "shutdown";
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qemu = {
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package = pkgs.qemu_kvm;
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ovmf = enabled;
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verbatimConfig = ''
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namespaces = []
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user = "+${builtins.toString config.users.users.${user}.uid}"
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'';
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};
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};
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};
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users.users.${user}.extraGroups = [ "qemu-libvirtd" "libvirtd" "disk" ];
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}
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