x86, 32-bit: change propagate_e820_map() back to find_max_pfn()

we don't need to call memory_present that early.
numa and sparse will call memory_present later and might
even fail, it will call memory_present for the full range.

also for sparse it will call alloc_bootmem ... before we set up bootmem.

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

4 files changed, 6 insertions, 7 deletions

diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c
index db760d4706af..0c025d04fc2e 100644
--- a/arch/x86/kernel/e820_32.c
+++ b/arch/x86/kernel/e820_32.c
@@ -210,7 +210,7 @@ void __init init_iomem_resources(struct resource *code_resource,
 /*
  * Find the highest page frame number we have available
  */
-void __init propagate_e820_map(void)
+void __init find_max_pfn(void)
 {
         int i;
 
@@ -227,7 +227,6 @@ void __init propagate_e820_map(void)
                         continue;
                 if (end > max_pfn)
                         max_pfn = end;
-                memory_present(0, start, end);
         }
 }
 
@@ -361,7 +360,7 @@ static int __init parse_memmap(char *arg)
                  * size before original memory map is
                  * reset.
                  */
-                propagate_e820_map();
+                find_max_pfn();
                 saved_max_pfn = max_pfn;
 #endif
                 e820.nr_map = 0;
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 6f40cb560ea9..29010420458d 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -730,10 +730,10 @@ void __init setup_arch(char **cmdline_p)
                 efi_init();
 
         /* update e820 for memory not covered by WB MTRRs */
-        propagate_e820_map();
+        find_max_pfn();
         mtrr_bp_init();
         if (mtrr_trim_uncached_memory(max_pfn))
-                propagate_e820_map();
+                find_max_pfn();
 
         max_low_pfn = setup_memory();
 
diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c
index 98b099eeab3a..ebbbba338150 100644
--- a/arch/x86/mm/discontig_32.c
+++ b/arch/x86/mm/discontig_32.c
@@ -120,7 +120,7 @@ int __init get_memcfg_numa_flat(void)
         printk("NUMA - single node, flat memory mode\n");
 
         /* Run the memory configuration and find the top of memory. */
-        propagate_e820_map();
+        find_max_pfn();
         node_start_pfn[0] = 0;
         node_end_pfn[0] = max_pfn;
         memory_present(0, 0, max_pfn);
diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h
index 7ace82570a36..00fbc60b9d30 100644
--- a/include/asm-x86/e820_32.h
+++ b/include/asm-x86/e820_32.h
@@ -21,7 +21,7 @@
 extern void setup_memory_map(void);
 extern void finish_e820_parsing(void);
 
-extern void propagate_e820_map(void);
+extern void find_max_pfn(void);
 extern void register_bootmem_low_pages(unsigned long max_low_pfn);
 extern void limit_regions(unsigned long long size);
 extern void init_iomem_resources(struct resource *code_resource,