mirror of
https://github.com/NixOS/nixpkgs.git
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4f0dadbf38
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.
Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.
A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.
This commit was automatically created and can be verified using
nix-build a08b3a4d19.tar.gz \
--argstr baseRev b32a094368
result/bin/apply-formatting $NIXPKGS_PATH
103 lines
3.1 KiB
Nix
103 lines
3.1 KiB
Nix
{
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config,
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lib,
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pkgs,
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...
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}:
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with lib;
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let
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cfg = config.virtualisation.kvmgt;
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kernelPackages = config.boot.kernelPackages;
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vgpuOptions = {
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uuid = mkOption {
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type = with types; listOf str;
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description = "UUID(s) of VGPU device. You can generate one with `libossp_uuid`.";
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};
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};
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in
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{
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options = {
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virtualisation.kvmgt = {
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enable = mkEnableOption ''
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KVMGT (iGVT-g) VGPU support. Allows Qemu/KVM guests to share host's Intel integrated graphics card.
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Currently only one graphical device can be shared. To allow users to access the device without root add them
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to the kvm group: `users.extraUsers.<yourusername>.extraGroups = [ "kvm" ];`
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'';
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# multi GPU support is under the question
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device = mkOption {
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type = types.str;
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default = "0000:00:02.0";
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description = "PCI ID of graphics card. You can figure it with {command}`ls /sys/class/mdev_bus`.";
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};
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vgpus = mkOption {
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default = { };
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type = with types; attrsOf (submodule [ { options = vgpuOptions; } ]);
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description = ''
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Virtual GPUs to be used in Qemu. You can find devices via {command}`ls /sys/bus/pci/devices/*/mdev_supported_types`
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and find info about device via {command}`cat /sys/bus/pci/devices/*/mdev_supported_types/i915-GVTg_V5_4/description`
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'';
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example = {
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i915-GVTg_V5_8.uuid = [ "a297db4a-f4c2-11e6-90f6-d3b88d6c9525" ];
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};
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};
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};
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};
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config = mkIf cfg.enable {
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assertions = singleton {
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assertion = versionAtLeast kernelPackages.kernel.version "4.16";
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message = "KVMGT is not properly supported for kernels older than 4.16";
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};
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boot.kernelModules = [ "kvmgt" ];
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boot.kernelParams = [ "i915.enable_gvt=1" ];
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services.udev.extraRules = ''
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SUBSYSTEM=="vfio", OWNER="root", GROUP="kvm"
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'';
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systemd =
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let
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vgpus = listToAttrs (
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flatten (
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mapAttrsToList (
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mdev: opt:
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map (
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id:
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nameValuePair "kvmgt-${id}" {
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inherit mdev;
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uuid = id;
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}
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) opt.uuid
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) cfg.vgpus
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)
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);
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in
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{
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paths = mapAttrs (_: opt: {
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description = "KVMGT VGPU ${opt.uuid} path";
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wantedBy = [ "multi-user.target" ];
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pathConfig = {
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PathExists = "/sys/bus/pci/devices/${cfg.device}/mdev_supported_types/${opt.mdev}/create";
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};
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}) vgpus;
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services = mapAttrs (_: opt: {
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description = "KVMGT VGPU ${opt.uuid}";
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serviceConfig = {
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Type = "oneshot";
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RemainAfterExit = true;
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ExecStart = "${pkgs.runtimeShell} -c 'echo ${opt.uuid} > /sys/bus/pci/devices/${cfg.device}/mdev_supported_types/${opt.mdev}/create'";
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ExecStop = "${pkgs.runtimeShell} -c 'echo 1 > /sys/bus/pci/devices/${cfg.device}/${opt.uuid}/remove'";
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};
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}) vgpus;
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};
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};
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meta.maintainers = with maintainers; [ patryk27 ];
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}
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