1 files changed, 24 insertions, 4 deletions

diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 7c1287ccf788..35d90a4720fd 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -69,7 +69,19 @@ static void __ref *vmem_alloc_pages(unsigned int order)
         return alloc_bootmem_pages((1 << order) * PAGE_SIZE);
 }
 
-#define vmem_pud_alloc()        ({ BUG(); ((pud_t *) NULL); })
+static inline pud_t *vmem_pud_alloc(void)
+{
+        pud_t *pud = NULL;
+
+#ifdef CONFIG_64BIT
+        pud = vmem_alloc_pages(2);
+        if (!pud)
+                return NULL;
+        pud_val(*pud) = _REGION3_ENTRY_EMPTY;
+        memcpy(pud + 1, pud, (PTRS_PER_PUD - 1)*sizeof(pud_t));
+#endif
+        return pud;
+}
 
 static inline pmd_t *vmem_pmd_alloc(void)
 {
@@ -84,13 +96,18 @@ static inline pmd_t *vmem_pmd_alloc(void)
         return pmd;
 }
 
-static inline pte_t *vmem_pte_alloc(void)
+static pte_t __init_refok *vmem_pte_alloc(void)
 {
-        pte_t *pte = vmem_alloc_pages(0);
+        pte_t *pte;
 
+        if (slab_is_available())
+                pte = (pte_t *) page_table_alloc(&init_mm);
+        else
+                pte = alloc_bootmem(PTRS_PER_PTE * sizeof(pte_t));
         if (!pte)
                 return NULL;
-        clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY, PAGE_SIZE);
+        clear_table((unsigned long *) pte, _PAGE_TYPE_EMPTY,
+                    PTRS_PER_PTE * sizeof(pte_t));
         return pte;
 }
 
@@ -360,6 +377,9 @@ void __init vmem_map_init(void)
 {
         int i;
 
+        INIT_LIST_HEAD(&init_mm.context.crst_list);
+        INIT_LIST_HEAD(&init_mm.context.pgtable_list);
+        init_mm.context.noexec = 0;
         NODE_DATA(0)->node_mem_map = VMEM_MAP;
         for (i = 0; i < MEMORY_CHUNKS && memory_chunk[i].size > 0; i++)
                 vmem_add_mem(memory_chunk[i].addr, memory_chunk[i].size);