diff -urN --exclude=CVS ../10-May-04/arch/ppc/mm/44x_remap.c ./arch/ppc/mm/44x_remap.c
--- ../10-May-04/arch/ppc/mm/44x_remap.c	Thu Jan  1 01:00:00 1970
+++ ./arch/ppc/mm/44x_remap.c	Thu Jun  3 16:54:44 2004
@@ -0,0 +1,102 @@
+/* 
+ * Implementation of remap_page_range() for IBM440GP where physical
+ * addresses are 36 bits.
+ * 
+ * This differs form ioremap64() in that it manipulates the
+ * current process's page tables.
+ * 
+ * $Id: 44x_remap.c,v 1.1 2004/06/03 15:54:44 medp Exp $
+ * $Log: 44x_remap.c,v $
+ * Revision 1.1  2004/06/03 15:54:44  medp
+ * Added io_remap_page_range64
+ *
+ */
+#include <linux/mm.h>
+
+
+static inline void forget_pte(pte_t page)
+{
+	if (!pte_none(page)) {
+		printk("forget_pte: old mapping existed!\n");
+		BUG();
+	}
+}
+
+/*
+ * maps a range of physical memory into the requested pages. the old
+ * mappings are removed. any references to nonexistent pages results
+ * in null mappings (currently treated as "copy-on-access")
+ */
+static inline void io_remap_pte_range64(pte_t * pte, unsigned long address, unsigned long size,
+	phys_addr_t phys_addr, pgprot_t prot)
+{
+	unsigned long end;
+
+	address &= ~PMD_MASK;
+	end = address + size;
+	if (end > PMD_SIZE)
+		end = PMD_SIZE;
+	do {
+		pte_t oldpage;
+		oldpage = ptep_get_and_clear(pte);
+
+ 		set_pte(pte, mk_pte_phys(phys_addr, prot));
+		forget_pte(oldpage);
+		address += PAGE_SIZE;
+		phys_addr += PAGE_SIZE;
+		pte++;
+	} while (address && (address < end));
+}
+
+static inline int io_remap_pmd_range64(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size,
+	phys_addr_t phys_addr, pgprot_t prot)
+{
+	unsigned long end;
+
+	address &= ~PGDIR_MASK;
+	end = address + size;
+	if (end > PGDIR_SIZE)
+		end = PGDIR_SIZE;
+	phys_addr -= address;
+	do {
+		pte_t * pte = pte_alloc(mm, pmd, address);
+		if (!pte)
+			return -ENOMEM;
+		io_remap_pte_range64(pte, address, end - address, address + phys_addr, prot);
+		address = (address + PMD_SIZE) & PMD_MASK;
+		pmd++;
+	} while (address && (address < end));
+	return 0;
+}
+
+/*  Note: this is only safe if the mm semaphore is held when called. */
+int io_remap_page_range64(unsigned long from, phys_addr_t phys_addr, unsigned long size, pgprot_t prot)
+{
+	int error = 0;
+	pgd_t * dir;
+	unsigned long beg = from;
+	unsigned long end = from + size;
+	struct mm_struct *mm = current->mm;
+
+	phys_addr -= from;
+	dir = pgd_offset(mm, from);
+	flush_cache_range(mm, beg, end);
+	if (from >= end)
+		BUG();
+
+	spin_lock(&mm->page_table_lock);
+	do {
+		pmd_t *pmd = pmd_alloc(mm, dir, from);
+		error = -ENOMEM;
+		if (!pmd)
+			break;
+		error = io_remap_pmd_range64(mm, pmd, from, end - from, phys_addr + from, prot);
+		if (error)
+			break;
+		from = (from + PGDIR_SIZE) & PGDIR_MASK;
+		dir++;
+	} while (from && (from < end));
+	spin_unlock(&mm->page_table_lock);
+	flush_tlb_range(mm, beg, end);
+	return error;
+}
diff -urN --exclude=CVS ../10-May-04/arch/ppc/mm/Makefile ./arch/ppc/mm/Makefile
--- ../10-May-04/arch/ppc/mm/Makefile	Tue Dec 16 20:12:55 2003
+++ ./arch/ppc/mm/Makefile	Thu Jun  3 16:54:44 2004
@@ -19,7 +19,7 @@
 
 obj-$(CONFIG_PPC_STD_MMU)	+= hashtable.o ppc_mmu.o tlb.o
 obj-$(CONFIG_40x)		+= 4xx_mmu.o
-obj-$(CONFIG_44x)		+= 44x_mmu.o
+obj-$(CONFIG_44x)		+= 44x_mmu.o 44x_remap.o
 obj-$(CONFIG_NOT_COHERENT_CACHE)	+= cachemap.o
 
 include $(TOPDIR)/Rules.make