update

configuration.nix

@@ -2,8 +2,14 @@
   pkgs,
   sls-steam,
   options,
+  config,
   ...
 }:
+let
+  cpuid-fault-emulation = pkgs.callPackage ./pkgs/cpuid-fault-emulation {
+    kernel = config.boot.kernelPackages.kernel;
+  };
+in
 
 {
   imports = [
@@ -66,6 +72,7 @@
     "kvm.ignore_msrs=1"
     "mitigations=off"
     "amdgpu.ppfeaturemask=0xffffffff"
+    "clearcpuid=umip"
   ];
 
   xdg = {
@@ -83,6 +90,18 @@
   boot.loader.grub.enable = true;
   boot.loader.grub.device = "nodev";
   boot.loader.grub.efiSupport = true;
+  boot.extraModulePackages = [ cpuid-fault-emulation ];
+
+  environment.systemPackages = [
+    (pkgs.writeShellScriptBin "enable-hypervisor" ''
+      sudo modprobe -r kvm_amd kvm
+      sudo modprobe cpuid_fault_emulation
+    '')
+    (pkgs.writeShellScriptBin "disable-hypervisor" ''
+      sudo modprobe -r cpuid_fault_emulation
+      sudo modprobe kvm_amd kvm
+    '')
+  ];
 
   networking.hostName = "nixos"; # Define your hostname.
   networking.firewall.enable = false;