MAYBE_BUILD_BUG_ON
MAYBE_BUILD_BUG_ON(__VIRTUAL_MASK_SHIFT >= 63);
MAYBE_BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
MAYBE_BUILD_BUG_ON(pgd_none(*pgd_ref));
MAYBE_BUILD_BUG_ON(irqs_per_chip > 32); \
MAYBE_BUILD_BUG_ON(HPAGE_PMD_ORDER > MAX_PAGE_ORDER);