crosvm: backport page size fix for tests

The version of crosvm we have packaged only passes its tests with 4K
pages.

The whole patch doesn't apply, but that's okay, because we don't run
most of the affected tests.

pkgs/applications/virtualization/crosvm/default.nix

@@ -1,4 +1,5 @@
-{ lib, rustPlatform, fetchgit, pkg-config, protobuf, python3, wayland-scanner
+{ lib, rustPlatform, fetchgit, fetchpatch
+, pkg-config, protobuf, python3, wayland-scanner
 , libcap, libdrm, libepoxy, minijail, virglrenderer, wayland, wayland-protocols
 }:
 
@@ -13,6 +14,16 @@ rustPlatform.buildRustPackage rec {
     fetchSubmodules = true;
   };
 
+  patches = [
+    (fetchpatch {
+      name = "test-page-size-fix.patch";
+      url = "https://chromium.googlesource.com/crosvm/crosvm/+/d9bc6e99ff5ac31d7d88b684c938af01a0872fc1%5E%21/?format=TEXT";
+      decode = "base64 -d";
+      includes = [ "src/crosvm/config.rs" ];
+      hash = "sha256-3gfNzp0WhtNr+8CWSISCJau208EMIo3RJhM+4SyeV3o=";
+    })
+  ];
+
   separateDebugInfo = true;
 
   cargoHash = "sha256-yRujLgPaoKx/wkG3yMwQ5ndy9X5xDWSKtCr8DypXvEA=";