kernel: Add tests to passthru.tests

nixos/tests/all-tests.nix

@@ -194,6 +194,7 @@ in
   keepalived = handleTest ./keepalived.nix {};
   keepassxc = handleTest ./keepassxc.nix {};
   kerberos = handleTest ./kerberos/default.nix {};
+  kernel-generic = handleTest ./kernel-generic.nix {};
   kernel-latest = handleTest ./kernel-latest.nix {};
   kernel-lts = handleTest ./kernel-lts.nix {};
   kernel-testing = handleTest ./kernel-testing.nix {};

nixos/tests/kernel-generic.nix

@@ -0,0 +1,29 @@
+{ system ? builtins.currentSystem
+, config ? { }
+, pkgs ? import ../.. { inherit system config; }
+}:
+
+with pkgs.lib;
+
+let
+  makeKernelTest = version: linuxPackages: (import ./make-test-python.nix ({ pkgs, ... }: {
+    name = "kernel-${version}";
+    meta = with pkgs.lib.maintainers; {
+      maintainers = [ nequissimus ];
+    };
+
+    machine = { ... }:
+      {
+        boot.kernelPackages = linuxPackages;
+      };
+
+    testScript =
+      ''
+        assert "Linux" in machine.succeed("uname -s")
+        assert "${linuxPackages.kernel.version}" in machine.succeed("uname -a")
+      '';
+  }));
+in
+with pkgs; {
+  linux_5_11 = makeKernelTest "5.11" linuxPackages_5_11;
+}

pkgs/os-specific/linux/kernel/generic.nix

@@ -55,7 +55,7 @@
 , autoModules ? stdenv.hostPlatform.linux-kernel.autoModules
 , preferBuiltin ? stdenv.hostPlatform.linux-kernel.preferBuiltin or false
 , kernelArch ? stdenv.hostPlatform.linuxArch
-
+, kernelTests ? []
 , ...
 }:
 
@@ -182,6 +182,7 @@ let
     kernelOlder = lib.versionOlder version;
     kernelAtLeast = lib.versionAtLeast version;
     passthru = kernel.passthru // (removeAttrs passthru [ "passthru" ]);
+    tests = kernelTests;
   };
 
 in lib.extendDerivation true passthru kernel

pkgs/os-specific/linux/kernel/linux-5.11.nix

@@ -1,4 +1,4 @@
-{ lib, buildPackages, fetchurl, perl, buildLinux, modDirVersionArg ? null, ... } @ args:
+{ lib, buildPackages, fetchurl, perl, buildLinux, nixosTests, modDirVersionArg ? null, ... } @ args:
 
 with lib;
 
@@ -15,4 +15,6 @@ buildLinux (args // rec {
     url = "mirror://kernel/linux/kernel/v5.x/linux-${version}.tar.xz";
     sha256 = "1fc3yl4srzla3cbihgnry0pqmgcc17zv0zlkk9zpx99371hpay0a";
   };
+
+  kernelTests = args.kernelTests or [ nixosTests.kernel-generic.linux_5_11 ];
 } // (args.argsOverride or {}))