x86: clean up using max_low_pfn on 32-bit

so that max_low_pfn is not changed after it is set.
so we can move that early and out of initmem_init.

could call find_low_pfn_range just after max_pfn is set.

also could move reserve_initrd out of setup_bootmem_allocator

so 32bit is more like 64bit.

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

1 files changed, 2 insertions, 1 deletions

diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h
index a0713d175f45..3810d14051e8 100644
--- a/include/asm-x86/page_32.h
+++ b/include/asm-x86/page_32.h
@@ -92,7 +92,8 @@ extern int sysctl_legacy_va_layout;
 #define VMALLOC_RESERVE         ((unsigned long)__VMALLOC_RESERVE)
 #define MAXMEM                  (-__PAGE_OFFSET - __VMALLOC_RESERVE)
 
-extern unsigned long initmem_init(unsigned long, unsigned long);
+extern void find_low_pfn_range(void);
+extern void initmem_init(unsigned long, unsigned long);
 extern void zone_sizes_init(void);
 extern void setup_bootmem_allocator(void);