SECTION_SIZE_BITS   19 arch/x86/include/asm/sparsemem.h #  define SECTION_SIZE_BITS	29
SECTION_SIZE_BITS   23 arch/x86/include/asm/sparsemem.h #  define SECTION_SIZE_BITS	26
SECTION_SIZE_BITS   28 arch/x86/include/asm/sparsemem.h # define SECTION_SIZE_BITS	27 /* matt - 128 is convenient right now */