PageHighMem
if (n_pages == 1 && !PageHighMem(sg_page(obj->mm.pages->sgl)))
if (caching != ttm_cached && !PageHighMem(p))
if (caching != ttm_cached && !PageHighMem(p))
if (PageHighMem(p))
if (restore->page_caching == alloc->tt_caching || PageHighMem(restore->alloced_page))
caching_consistent = (page_caching == alloc->tt_caching) || PageHighMem(p);