1 files changed, 4 insertions, 9 deletions

diff --git a/include/asm-sparc64/page.h b/include/asm-sparc64/page.h
index 5426bb28a993..fcb2812265f4 100644
--- a/include/asm-sparc64/page.h
+++ b/include/asm-sparc64/page.h
@@ -104,10 +104,12 @@ typedef unsigned long pgprot_t;
 #define HUGETLB_PAGE_ORDER      (HPAGE_SHIFT - PAGE_SHIFT)
 #define ARCH_HAS_SETCLEAR_HUGE_PTE
 #define ARCH_HAS_HUGETLB_PREFAULT_HOOK
+#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
 #endif
 
 #define TASK_UNMAPPED_BASE      (test_thread_flag(TIF_32BIT) ? \
-                                 (_AC(0x0000000070000000,UL)) : (PAGE_OFFSET))
+                                 (_AC(0x0000000070000000,UL)) : \
+                                 (_AC(0xfffff80000000000,UL) + (1UL << 32UL)))
 
 #endif /* !(__ASSEMBLY__) */
 
@@ -124,17 +126,10 @@ typedef unsigned long pgprot_t;
 #define __pa(x)                 ((unsigned long)(x) - PAGE_OFFSET)
 #define __va(x)                 ((void *)((unsigned long) (x) + PAGE_OFFSET))
 
-/* PFNs are real physical page numbers.  However, mem_map only begins to record
- * per-page information starting at pfn_base.  This is to handle systems where
- * the first physical page in the machine is at some huge physical address,
- * such as 4GB.   This is common on a partitioned E10000, for example.
- */
-extern struct page *pfn_to_page(unsigned long pfn);
-extern unsigned long page_to_pfn(struct page *);
+#define pfn_to_kaddr(pfn)       __va((pfn) << PAGE_SHIFT)
 
 #define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr)>>PAGE_SHIFT)
 
-#define pfn_valid(pfn)          (((pfn)-(pfn_base)) < max_mapnr)
 #define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
 #define virt_to_phys __pa