1 files changed, 18 insertions, 48 deletions

diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 46c4ca5d15c5..59bf2335a4ce 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -42,6 +42,7 @@
 
 unsigned long ioremap_base;
 unsigned long ioremap_bot;
+EXPORT_SYMBOL(ioremap_bot);
 
 /* The maximum lowmem defaults to 768Mb, but this can be configured to
  * another value.
@@ -103,7 +104,7 @@ static void __iomem *__ioremap(phys_addr_t addr, unsigned long size,
                 area = get_vm_area(size, VM_IOREMAP);
                 if (area == NULL)
                         return NULL;
-                v = VMALLOC_VMADDR(area->addr);
+                v = (unsigned long) area->addr;
         } else {
                 v = (ioremap_bot -= size);
         }
@@ -144,7 +145,6 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
         pmd_t *pd;
         pte_t *pg;
         int err = -ENOMEM;
-        /* spin_lock(&init_mm.page_table_lock); */
         /* Use upper 10 bits of VA to index the first level map */
         pd = pmd_offset(pgd_offset_k(va), va);
         /* Use middle 10 bits of VA to index the second-level map */
@@ -155,39 +155,13 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
                 err = 0;
                 set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
                                 __pgprot(flags)));
-                if (mem_init_done)
+                if (unlikely(mem_init_done))
                         flush_HPTE(0, va, pmd_val(*pd));
                         /* flush_HPTE(0, va, pg); */
-
         }
-        /* spin_unlock(&init_mm.page_table_lock); */
         return err;
 }
 
-void __init adjust_total_lowmem(void)
-{
-/* TBD */
-#if 0
-        unsigned long max_low_mem = MAX_LOW_MEM;
-
-        if (total_lowmem > max_low_mem) {
-                total_lowmem = max_low_mem;
-#ifndef CONFIG_HIGHMEM
-                printk(KERN_INFO "Warning, memory limited to %ld Mb, use "
-                                "CONFIG_HIGHMEM to reach %ld Mb\n",
-                                max_low_mem >> 20, total_memory >> 20);
-                total_memory = total_lowmem;
-#endif /* CONFIG_HIGHMEM */
-        }
-#endif
-}
-
-static void show_tmem(unsigned long tmem)
-{
-        volatile unsigned long a;
-        a = a + tmem;
-}
-
 /*
  * Map in all of physical memory starting at CONFIG_KERNEL_START.
  */
@@ -197,7 +171,6 @@ void __init mapin_ram(void)
 
         v = CONFIG_KERNEL_START;
         p = memory_start;
-        show_tmem(memory_size);
         for (s = 0; s < memory_size; s += PAGE_SIZE) {
                 f = _PAGE_PRESENT | _PAGE_ACCESSED |
                                 _PAGE_SHARED | _PAGE_HWEXEC;
@@ -216,24 +189,6 @@ void __init mapin_ram(void)
 /* is x a power of 2? */
 #define is_power_of_2(x)        ((x) != 0 && (((x) & ((x) - 1)) == 0))
 
-/*
- * Set up a mapping for a block of I/O.
- * virt, phys, size must all be page-aligned.
- * This should only be called before ioremap is called.
- */
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
-                             unsigned int size, int flags)
-{
-        int i;
-
-        if (virt > CONFIG_KERNEL_START && virt < ioremap_bot)
-                ioremap_bot = ioremap_base = virt;
-
-        /* Put it in the page tables. */
-        for (i = 0; i < size; i += PAGE_SIZE)
-                map_page(virt + i, phys + i, flags);
-}
-
 /* Scan the real Linux page tables and return a PTE pointer for
  * a virtual address in a context.
  * Returns true (1) if PTE was found, zero otherwise.  The pointer to
@@ -284,3 +239,18 @@ unsigned long iopa(unsigned long addr)
 
         return pa;
 }
+
+__init_refok pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+                unsigned long address)
+{
+        pte_t *pte;
+        if (mem_init_done) {
+                pte = (pte_t *)__get_free_page(GFP_KERNEL |
+                                        __GFP_REPEAT | __GFP_ZERO);
+        } else {
+                pte = (pte_t *)early_get_page();
+                if (pte)
+                        clear_page(pte);
+        }
+        return pte;
+}