35 	struct page *pages;  in vdso_setup_data_pages()  local
38 	 * Allocate the data pages dynamically. SPARC does not support mapping  in vdso_setup_data_pages()
39 	 * static pages to be mapped into userspace.  in vdso_setup_data_pages()
42 	 * Do not use folios. In time namespaces the pages are mapped in a different order  in vdso_setup_data_pages()
45 	pages = alloc_pages(GFP_KERNEL, order);  in vdso_setup_data_pages()
46 	if (!pages)  in vdso_setup_data_pages()
47 		panic("Unable to allocate VDSO storage pages");  in vdso_setup_data_pages()
49 	/* The pages are mapped one-by-one into userspace and each one needs to be refcounted. */  in vdso_setup_data_pages()
50 	split_page(pages, order);  in vdso_setup_data_pages()
52 	/* Move the data already written by other subsystems to the new pages */  in vdso_setup_data_pages()
53 	memcpy(page_address(pages), vdso_initdata, VDSO_NR_PAGES * PAGE_SIZE);  in vdso_setup_data_pages()
56 		vdso_k_time_data = page_address(pages + VDSO_TIME_PAGE_OFFSET);  in vdso_setup_data_pages()
59 		vdso_k_rng_data = page_address(pages + VDSO_RNG_PAGE_OFFSET);  in vdso_setup_data_pages()
62 		vdso_k_arch_data = page_address(pages + VDSO_ARCH_PAGES_START);  in vdso_setup_data_pages()