x86: move some func calling from setup_arch to paging_init

those function depend on paging setup pgtable, so they could access
the ram in bootmem region but just get mapped.

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 29 insertions, 0 deletions

diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 9bb35cf8bc4..20ca29591ab 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -705,6 +705,23 @@ void __init setup_bootmem_allocator(void)
 
 }
 
+/*
+ * The node 0 pgdat is initialized before all of these because
+ * it's needed for bootmem.  node>0 pgdats have their virtual
+ * space allocated before the pagetables are in place to access
+ * them, so they can't be cleared then.
+ *
+ * This should all compile down to nothing when NUMA is off.
+ */
+static void __init remapped_pgdat_init(void)
+{
+        int nid;
+
+        for_each_online_node(nid) {
+                if (nid != 0)
+                        memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+        }
+}
 
 /*
  * paging_init() sets up the page tables - note that the first 8MB are
@@ -727,6 +744,18 @@ void __init paging_init(void)
         __flush_tlb_all();
 
         kmap_init();
+
+        /*
+         * NOTE: at this point the bootmem allocator is fully available.
+         */
+
+        post_reserve_initrd();
+
+        remapped_pgdat_init();
+        sparse_init();
+        zone_sizes_init();
+
+        paravirt_post_allocator_init();
 }
 
 /*