x86: Make 32bit support NO_BOOTMEM

Let's make 32bit consistent with 64bit.

-v2: Andrew pointed out for 32bit that we should use -1ULL

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <1265793639-15071-25-git-send-email-yinghai@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>

4 files changed, 12 insertions, 1 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 95439843cebc..29f9efb74fc7 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -571,7 +571,6 @@ config PARAVIRT_DEBUG
 config NO_BOOTMEM
         default y
         bool "Disable Bootmem code"
-        depends on X86_64
         ---help---
           Use early_res directly instead of bootmem before slab is ready.
                 - allocator (buddy) [generic]
diff --git a/arch/x86/kernel/early_res.c b/arch/x86/kernel/early_res.c
index dbf08bd01252..656cdf86a2fa 100644
--- a/arch/x86/kernel/early_res.c
+++ b/arch/x86/kernel/early_res.c
@@ -354,6 +354,9 @@ int __init get_free_all_memory_range(struct range **rangep, int nodeid)
 
         /* need to go over early_node_map to find out good range for node */
         nr_range = add_from_early_node_map(range, count, nr_range, nodeid);
+#ifdef CONFIG_X86_32
+        subtract_range(range, count, max_low_pfn, -1ULL);
+#endif
         subtract_early_res(range, count);
         nr_range = clean_sort_range(range, count);
 
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 2dccde06d22f..262867a7d438 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -748,6 +748,7 @@ static void __init zone_sizes_init(void)
         free_area_init_nodes(max_zone_pfns);
 }
 
+#ifndef CONFIG_NO_BOOTMEM
 static unsigned long __init setup_node_bootmem(int nodeid,
                                  unsigned long start_pfn,
                                  unsigned long end_pfn,
@@ -767,9 +768,11 @@ static unsigned long __init setup_node_bootmem(int nodeid,
 
         return bootmap + bootmap_size;
 }
+#endif
 
 void __init setup_bootmem_allocator(void)
 {
+#ifndef CONFIG_NO_BOOTMEM
         int nodeid;
         unsigned long bootmap_size, bootmap;
         /*
@@ -781,11 +784,13 @@ void __init setup_bootmem_allocator(void)
         if (bootmap == -1L)
                 panic("Cannot find bootmem map of size %ld\n", bootmap_size);
         reserve_early(bootmap, bootmap + bootmap_size, "BOOTMAP");
+#endif
 
         printk(KERN_INFO "  mapped low ram: 0 - %08lx\n",
                  max_pfn_mapped<<PAGE_SHIFT);
         printk(KERN_INFO "  low ram: 0 - %08lx\n", max_low_pfn<<PAGE_SHIFT);
 
+#ifndef CONFIG_NO_BOOTMEM
         for_each_online_node(nodeid) {
                  unsigned long start_pfn, end_pfn;
 
@@ -803,6 +808,7 @@ void __init setup_bootmem_allocator(void)
                 bootmap = setup_node_bootmem(nodeid, start_pfn, end_pfn,
                                                  bootmap);
         }
+#endif
 
         after_bootmem = 1;
 }
diff --git a/arch/x86/mm/numa_32.c b/arch/x86/mm/numa_32.c
index b20760ca7244..809baaaf48b1 100644
--- a/arch/x86/mm/numa_32.c
+++ b/arch/x86/mm/numa_32.c
@@ -418,7 +418,10 @@ void __init initmem_init(unsigned long start_pfn, unsigned long end_pfn,
 
         for_each_online_node(nid) {
                 memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+                NODE_DATA(nid)->node_id = nid;
+#ifndef CONFIG_NO_BOOTMEM
                 NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
+#endif
         }
 
         setup_bootmem_allocator();