SECTION_SIZE_BITS  839 include/linux/mmzone.h #define SECTIONS_SHIFT		(MAX_PHYSMEM_BITS - SECTION_SIZE_BITS)
SECTION_SIZE_BITS  841 include/linux/mmzone.h #define PA_SECTION_SHIFT	(SECTION_SIZE_BITS)
SECTION_SIZE_BITS  842 include/linux/mmzone.h #define PFN_SECTION_SHIFT	(SECTION_SIZE_BITS - PAGE_SHIFT)
SECTION_SIZE_BITS  852 include/linux/mmzone.h #if (MAX_ORDER - 1 + PAGE_SHIFT) > SECTION_SIZE_BITS