vmm_clock: init at 0.1.0

pkgs/os-specific/linux/vmm_clock/default.nix

@@ -0,0 +1,38 @@
+{ stdenv, lib, fetchFromGitHub, kernel }:
+
+stdenv.mkDerivation rec {
+  name = "vmm_clock";
+  version = "0.1.0";
+
+  src = fetchFromGitHub {
+    owner = "voutilad";
+    repo = "vmm_clock";
+    rev = "${version}";
+    sha256 = "0hg7ywznh6v11fywsz6f7w298bxph0wwm046zqaqncjvr4aizla4";
+  };
+
+  hardeningDisable = [ "pic" "format" ];
+  nativeBuildInputs = kernel.moduleBuildDependencies;
+
+  extraConfig = ''
+    CONFIG_RTC_HCTOSYS yes
+  '';
+
+  makeFlags = kernel.makeFlags ++ [
+    "DEPMOD=echo"
+    "INSTALL_MOD_PATH=$(out)"
+    "KERNELRELEASE=${kernel.modDirVersion}"
+    "KERNELDIR=${kernel.dev}/lib/modules/${kernel.modDirVersion}/build"
+  ];
+
+  meta = with lib; {
+    description =
+      "Experimental implementation of a kvmclock-derived clocksource for Linux guests under OpenBSD's hypervisor";
+    homepage = "https://github.com/voutilad/vmm_clock";
+    license = licenses.gpl2;
+    maintainers = with maintainers; [ qbit ];
+    platforms = platforms.linux;
+  };
+
+  enableParallelBuilding = true;
+}

pkgs/top-level/linux-kernels.nix

@@ -439,6 +439,8 @@ in {
 
     vm-tools = callPackage ../os-specific/linux/vm-tools { };
 
+    vmm_clock = callPackage ../os-specific/linux/vmm_clock { };
+
     wireguard = if lib.versionOlder kernel.version "5.6" then callPackage ../os-specific/linux/wireguard { } else null;
 
     x86_energy_perf_policy = callPackage ../os-specific/linux/x86_energy_perf_policy { };