[S390] vmemmap: use clear_table to initialise page tables.

Always use clear_table to initialise page tables. The overlapping
memcpy is just a leftover of a previous version that wasn't fully
converted to clear_table.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index 35d90a4720f..3ffc0211dc8 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -77,8 +77,7 @@ static inline pud_t *vmem_pud_alloc(void)
         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));
+        clear_table((unsigned long *) pud, _REGION3_ENTRY_EMPTY, PAGE_SIZE * 4);
 #endif
         return pud;
 }
@@ -91,7 +90,7 @@ static inline pmd_t *vmem_pmd_alloc(void)
         pmd = vmem_alloc_pages(2);
         if (!pmd)
                 return NULL;
-        clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE*4);
+        clear_table((unsigned long *) pmd, _SEGMENT_ENTRY_EMPTY, PAGE_SIZE * 4);
 #endif
         return pmd;
 }