provided code

src/threads/init.h

@@ -0,0 +1,12 @@
+#ifndef THREADS_INIT_H
+#define THREADS_INIT_H
+
+#include <debug.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/* Page directory with kernel mappings only. */
+extern uint32_t *init_page_dir;
+
+#endif /* threads/init.h */