patch-2.4.25 linux-2.4.25/include/asm-ia64/pgtable.h

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diff -urN linux-2.4.24/include/asm-ia64/pgtable.h linux-2.4.25/include/asm-ia64/pgtable.h
@@ -431,6 +431,12 @@
 /* We provide our own get_unmapped_area to cope with VA holes for userland */
 #define HAVE_ARCH_UNMAPPED_AREA
 
+#ifdef CONFIG_HUGETLB_PAGE
+#define HUGETLB_PGDIR_SHIFT	(HPAGE_SHIFT + 2*(PAGE_SHIFT-3))
+#define HUGETLB_PGDIR_SIZE	(__IA64_UL(1) << HUGETLB_PGDIR_SHIFT)
+#define HUGETLB_PGDIR_MASK	(~(HUGETLB_PGDIR_SIZE-1))
+#endif
+
 /*
  * No page table caches to initialise
  */

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