kmap_local_page_try_from_panic
vaddr2 = kmap_local_page_try_from_panic(next_page);
vaddr = kmap_local_page_try_from_panic(pages[page]);
vaddr = kmap_local_page_try_from_panic(pages[page]);
kmap_local_page_try_from_panic(panic->pages[panic->page]);
return kmap_local_page_try_from_panic(bo->ttm->pages[page]);