1 files changed, 16 insertions, 6 deletions

diff --git a/linux-2.6-xen-sparse/include/asm-ia64/page.h b/linux-2.6-xen-sparse/include/asm-ia64/page.h
index fca73f00ef..a902f9df2d 100644
--- a/linux-2.6-xen-sparse/include/asm-ia64/page.h
+++ b/linux-2.6-xen-sparse/include/asm-ia64/page.h
@@ -57,6 +57,8 @@
 
 # define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 # define ARCH_HAS_HUGEPAGE_ONLY_RANGE
+# define ARCH_HAS_PREPARE_HUGEPAGE_RANGE
+# define ARCH_HAS_HUGETLB_FREE_PGD_RANGE
 #endif /* CONFIG_HUGETLB_PAGE */
 
 #ifdef __ASSEMBLY__
@@ -104,17 +106,25 @@ extern int ia64_pfn_valid (unsigned long pfn);
 # define ia64_pfn_valid(pfn) 1
 #endif
 
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+extern struct page *vmem_map;
+#ifdef CONFIG_DISCONTIGMEM
+# define page_to_pfn(page)	((unsigned long) (page - vmem_map))
+# define pfn_to_page(pfn)	(vmem_map + (pfn))
+#endif
+#endif
+
+#if defined(CONFIG_FLATMEM) || defined(CONFIG_SPARSEMEM)
+/* FLATMEM always configures mem_map (mem_map = vmem_map if necessary) */
+#include <asm-generic/memory_model.h>
+#endif
+
 #ifdef CONFIG_FLATMEM
 # define pfn_valid(pfn)		(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
-# define page_to_pfn(page)	((unsigned long) (page - mem_map))
-# define pfn_to_page(pfn)	(mem_map + (pfn))
 #elif defined(CONFIG_DISCONTIGMEM)
-extern struct page *vmem_map;
 extern unsigned long min_low_pfn;
 extern unsigned long max_low_pfn;
 # define pfn_valid(pfn)		(((pfn) >= min_low_pfn) && ((pfn) < max_low_pfn) && ia64_pfn_valid(pfn))
-# define page_to_pfn(page)	((unsigned long) (page - vmem_map))
-# define pfn_to_page(pfn)	(vmem_map + (pfn))
 #endif
 
 #ifndef CONFIG_XEN
@@ -149,7 +159,7 @@ typedef union ia64_va {
 				 | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT)))
 # define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
 # define is_hugepage_only_range(mm, addr, len)		\
-	 (REGION_NUMBER(addr) == RGN_HPAGE &&	\
+	 (REGION_NUMBER(addr) == RGN_HPAGE ||	\
 	  REGION_NUMBER((addr)+(len)-1) == RGN_HPAGE)
 extern unsigned int hpage_shift;
 #endif