1 files changed, 2 insertions, 23 deletions

diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index 202c952a29b4..fa31de6ae97a 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -77,28 +77,6 @@ void show_mem(void)
         printk("%lu pages pagetables\n", global_page_state(NR_PAGETABLE));
 }
 
-static void __init setup_ro_region(void)
-{
-        pgd_t *pgd;
-        pud_t *pud;
-        pmd_t *pmd;
-        pte_t *pte;
-        pte_t new_pte;
-        unsigned long address, end;
-
-        address = ((unsigned long)&_stext) & PAGE_MASK;
-        end = PFN_ALIGN((unsigned long)&_eshared);
-
-        for (; address < end; address += PAGE_SIZE) {
-                pgd = pgd_offset_k(address);
-                pud = pud_offset(pgd, address);
-                pmd = pmd_offset(pud, address);
-                pte = pte_offset_kernel(pmd, address);
-                new_pte = mk_pte_phys(address, __pgprot(_PAGE_RO));
-                *pte = new_pte;
-        }
-}
-
 /*
  * paging_init() sets up the page tables
  */
@@ -121,7 +99,6 @@ void __init paging_init(void)
         clear_table((unsigned long *) init_mm.pgd, pgd_type,
                     sizeof(unsigned long)*2048);
         vmem_map_init();
-        setup_ro_region();
 
         /* enable virtual mapping in kernel mode */
         __ctl_load(S390_lowcore.kernel_asce, 1, 1);
@@ -129,6 +106,8 @@ void __init paging_init(void)
         __ctl_load(S390_lowcore.kernel_asce, 13, 13);
         __raw_local_irq_ssm(ssm_mask);
 
+        sparse_memory_present_with_active_regions(MAX_NUMNODES);
+        sparse_init();
         memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
 #ifdef CONFIG_ZONE_DMA
         max_zone_pfns[ZONE_DMA] = PFN_DOWN(MAX_DMA_ADDRESS);