|  | #ifndef _4LEVEL_FIXUP_H | 
|  | #define _4LEVEL_FIXUP_H | 
|  |  | 
|  | #define __ARCH_HAS_4LEVEL_HACK | 
|  | #define __PAGETABLE_PUD_FOLDED | 
|  |  | 
|  | #define PUD_SIZE			PGDIR_SIZE | 
|  | #define PUD_MASK			PGDIR_MASK | 
|  | #define PTRS_PER_PUD			1 | 
|  |  | 
|  | #define pud_t				pgd_t | 
|  |  | 
|  | #define pmd_alloc(mm, pud, address) \ | 
|  | ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \ | 
|  | NULL: pmd_offset(pud, address)) | 
|  |  | 
|  | #define pud_alloc(mm, pgd, address)	(pgd) | 
|  | #define pud_offset(pgd, start)		(pgd) | 
|  | #define pud_none(pud)			0 | 
|  | #define pud_bad(pud)			0 | 
|  | #define pud_present(pud)		1 | 
|  | #define pud_ERROR(pud)			do { } while (0) | 
|  | #define pud_clear(pud)			pgd_clear(pud) | 
|  | #define pud_val(pud)			pgd_val(pud) | 
|  | #define pud_populate(mm, pud, pmd)	pgd_populate(mm, pud, pmd) | 
|  | #define pud_page(pud)			pgd_page(pud) | 
|  | #define pud_page_vaddr(pud)		pgd_page_vaddr(pud) | 
|  |  | 
|  | #undef pud_free_tlb | 
|  | #define pud_free_tlb(tlb, x, addr)	do { } while (0) | 
|  | #define pud_free(mm, x)			do { } while (0) | 
|  | #define __pud_free_tlb(tlb, x, addr)	do { } while (0) | 
|  |  | 
|  | #undef  pud_addr_end | 
|  | #define pud_addr_end(addr, end)		(end) | 
|  |  | 
|  | #endif |