PG_LIST_ISINIT
page_list_add(pp, PG_FREE_LIST | PG_LIST_HEAD | PG_LIST_ISINIT);
page_list_add_pages(root, PG_LIST_ISINIT);
ASSERT(PAGE_EXCL(pp) || (flags & PG_LIST_ISINIT));
if (flags & PG_LIST_ISINIT) {
ASSERT(PAGE_EXCL(pp) || (flags & PG_LIST_ISINIT));
if (flags & PG_LIST_ISINIT) {