#ifndef _PGTABLE_NOPMD_H#define _PGTABLE_NOPMD_H#ifndef __ASSEMBLY__#include <asm-generic/pgtable-nopud.h>#define __PAGETABLE_PMD_FOLDED/* * Having the pmd type consist of a pud gets the size right, and allows * us to conceptually access the pud entry that this pmd is folded into * without casting. */typedef struct { pud_t pud; } pmd_t;#define PMD_SHIFT	PUD_SHIFT#define PTRS_PER_PMD	1#define PMD_SIZE  	(1UL << PMD_SHIFT)#define PMD_MASK  	(~(PMD_SIZE-1))/* * The "pud_xxx()" functions here are trivial for a folded two-level * setup: the pmd is never bad, and a pmd always exists (as it's folded * into the pud entry) */static inline int pud_none(pud_t pud)		{ return 0; }static inline int pud_bad(pud_t pud)		{ return 0; }static inline int pud_present(pud_t pud)	{ return 1; }static inline void pud_clear(pud_t *pud)	{ }#define pmd_ERROR(pmd)				(pud_ERROR((pmd).pud))#define pud_populate(mm, pmd, pte)		do { } while (0)/* * (pmds are folded into puds so this doesn't get actually called, * but the define is needed for a generic inline function.) */#define set_pud(pudptr, pudval)			set_pmd((pmd_t *)(pudptr), (pmd_t) { pudval })static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address){	return (pmd_t *)pud;}#define pmd_val(x)				(pud_val((x).pud))#define __pmd(x)				((pmd_t) { __pud(x) } )#define pud_page(pud)				(pmd_page((pmd_t){ pud }))#define pud_page_vaddr(pud)			(pmd_page_vaddr((pmd_t){ pud }))/* * allocating and freeing a pmd is trivial: the 1-entry pmd is * inside the pud, so has no extra memory associated with it. */#define pmd_alloc_one(mm, address)		NULL#define pmd_free(x)				do { } while (0)#define __pmd_free_tlb(tlb, x)			do { } while (0)#undef  pmd_addr_end#define pmd_addr_end(addr, end)			(end)#endif /* __ASSEMBLY__ */#endif /* _PGTABLE_NOPMD_H */