diff -urNp fastpte-ref/include/asm-i386/pgalloc.h fastpte/include/asm-i386/pgalloc.h
--- fastpte-ref/include/asm-i386/pgalloc.h	Fri May 24 03:04:54 2002
+++ fastpte/include/asm-i386/pgalloc.h	Fri May 24 03:06:14 2002
@@ -140,8 +140,13 @@ static __inline__ void pte_free_slow(pte
 }
 
 #define pte_free(pte)		pte_free_fast(pte)
+#ifdef CONFIG_X86_PAE
+#define pgd_alloc(mm)		get_pgd_slow()
 #define pgd_free(pgd)		free_pgd_slow(pgd)
+#else
 #define pgd_alloc(mm)		get_pgd_fast()
+#define pgd_free(pgd)		free_pgd_fast(pgd)
+#endif
 
 /*
  * allocating and freeing a pmd is trivial: the 1-entry pmd is