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Subject[PATCH] x86: move some func calling from setup_arch to paging_init
Date

those function depends 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>

---
arch/x86/kernel/setup_32.c | 34 ++--------------------------------
arch/x86/mm/init_32.c | 29 +++++++++++++++++++++++++++++
include/asm-x86/setup.h | 1 +
3 files changed, 32 insertions(+), 32 deletions(-)

Index: linux-2.6/arch/x86/kernel/setup_32.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup_32.c
+++ linux-2.6/arch/x86/kernel/setup_32.c
@@ -250,7 +250,7 @@ static void __init reserve_initrd(void)

#define MAX_MAP_CHUNK (NR_FIX_BTMAPS << PAGE_SHIFT)

-static void __init post_reserve_initrd(void)
+void __init post_reserve_initrd(void)
{
u64 ramdisk_image = boot_params.hdr.ramdisk_image;
u64 ramdisk_size = boot_params.hdr.ramdisk_size;
@@ -308,29 +308,11 @@ static void __init post_reserve_initrd(v
void __init reserve_initrd(void)
{
}
-static void __init post_reserve_initrd(void)
+void __init post_reserve_initrd(void)
{
}
#endif /* CONFIG_BLK_DEV_INITRD */

-/*
- * 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));
- }
-}
-
#ifdef CONFIG_MCA
static void set_mca_bus(int x)
{
@@ -530,18 +512,6 @@ void __init setup_arch(char **cmdline_p)
init_ohci1394_dma_on_all_controllers();
#endif

- /*
- * 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();
-
#ifdef CONFIG_X86_GENERICARCH
generic_apic_probe();
#endif
Index: linux-2.6/arch/x86/mm/init_32.c
===================================================================
--- linux-2.6.orig/arch/x86/mm/init_32.c
+++ linux-2.6/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();
}

/*
Index: linux-2.6/include/asm-x86/setup.h
===================================================================
--- linux-2.6.orig/include/asm-x86/setup.h
+++ linux-2.6/include/asm-x86/setup.h
@@ -39,6 +39,7 @@ void reserve_crashkernel(void);
#include <asm/bootparam.h>

void reserve_standard_io_resources(void);
+extern void post_reserve_initrd(void);

#ifndef _SETUP


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