x86: introduce init_memory_mapping for 32bit #1
... so can we use mem below max_low_pfn earlier.
this allows us to move several functions more early instead of waiting
to after paging_init.
That includes moving relocate_initrd() earlier in the bootup, and kva
related early setup done in initmem_init. (in followup patches)
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h
index 3810d14..4ae1dab 100644
--- a/include/asm-x86/page_32.h
+++ b/include/asm-x86/page_32.h
@@ -93,6 +93,8 @@
#define MAXMEM (-__PAGE_OFFSET - __VMALLOC_RESERVE)
extern void find_low_pfn_range(void);
+extern unsigned long init_memory_mapping(unsigned long start,
+ unsigned long end);
extern void initmem_init(unsigned long, unsigned long);
extern void zone_sizes_init(void);
extern void setup_bootmem_allocator(void);