nixpkgs/nixos/modules/virtualisation/hyperv-guest.nix
ilian 29a6c9b9a3 nixos/hypervGuest: add Microsoft Synthetic Keyboard driver
Ensure that the HyperV keyboard driver is available in the early
stages of the boot process. This allows the user to enter a disk
encryption passphrase or repair a boot problem in an interactive
shell.
2021-02-17 08:01:34 +00:00

67 lines
1.8 KiB
Nix

{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.virtualisation.hypervGuest;
in {
options = {
virtualisation.hypervGuest = {
enable = mkEnableOption "Hyper-V Guest Support";
videoMode = mkOption {
type = types.str;
default = "1152x864";
example = "1024x768";
description = ''
Resolution at which to initialize the video adapter.
Supports screen resolution up to Full HD 1920x1080 with 32 bit color
on Windows Server 2012, and 1600x1200 with 16 bit color on Windows
Server 2008 R2 or earlier.
'';
};
};
};
config = mkIf cfg.enable {
boot = {
initrd.kernelModules = [
"hv_balloon" "hv_netvsc" "hv_storvsc" "hv_utils" "hv_vmbus"
];
initrd.availableKernelModules = [ "hyperv_keyboard" ];
kernelParams = [
"video=hyperv_fb:${cfg.videoMode} elevator=noop"
];
};
environment.systemPackages = [ config.boot.kernelPackages.hyperv-daemons.bin ];
security.rngd.enable = false;
# enable hotadding cpu/memory
services.udev.packages = lib.singleton (pkgs.writeTextFile {
name = "hyperv-cpu-and-memory-hotadd-udev-rules";
destination = "/etc/udev/rules.d/99-hyperv-cpu-and-memory-hotadd.rules";
text = ''
# Memory hotadd
SUBSYSTEM=="memory", ACTION=="add", DEVPATH=="/devices/system/memory/memory[0-9]*", TEST=="state", ATTR{state}="online"
# CPU hotadd
SUBSYSTEM=="cpu", ACTION=="add", DEVPATH=="/devices/system/cpu/cpu[0-9]*", TEST=="online", ATTR{online}="1"
'';
});
systemd = {
packages = [ config.boot.kernelPackages.hyperv-daemons.lib ];
targets.hyperv-daemons = {
wantedBy = [ "multi-user.target" ];
};
};
};
}