156 	unsigned long segment_table, page_table, page_frame;  in vdso_alloc_per_cpu()  local
160 	page_table = get_zeroed_page(GFP_KERNEL);  in vdso_alloc_per_cpu()
162 	if (!segment_table || !page_table || !page_frame)  in vdso_alloc_per_cpu()
165 	arch_set_page_dat(virt_to_page(page_table), 0);  in vdso_alloc_per_cpu()
174 	memset64((u64 *)page_table, _PAGE_INVALID, PTRS_PER_PTE);  in vdso_alloc_per_cpu()
176 	*(unsigned long *) segment_table = _SEGMENT_ENTRY + page_table;  in vdso_alloc_per_cpu()
177 	*(unsigned long *) page_table = _PAGE_PROTECT + page_frame;  in vdso_alloc_per_cpu()
187 	free_page(page_table);  in vdso_alloc_per_cpu()
194 	unsigned long segment_table, page_table, page_frame;  in vdso_free_per_cpu()  local
197 	page_table = *(unsigned long *) segment_table;  in vdso_free_per_cpu()
198 	page_frame = *(unsigned long *) page_table;  in vdso_free_per_cpu()
201 	free_page(page_table);  in vdso_free_per_cpu()