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#ifndef _I386_PGALLOC_H
#define _I386_PGALLOC_H

#include <linux/config.h>
#include <asm/processor.h>
#include <asm/fixmap.h>
#include <linux/threads.h>
#include <linux/mm.h>           /* for struct page */

#define pmd_populate_kernel(mm, pmd, pte) \
                set_pmd(pmd, __pmd(_PAGE_TABLE + __pa(pte)))

static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
{
        set_pmd(pmd, __pmd(_PAGE_TABLE +
                ((unsigned long long)page_to_pfn(pte) <<
                        (unsigned long long) PAGE_SHIFT)));
}
/*
 * Allocate and free page tables.
 */

extern pgd_t *pgd_alloc(struct mm_struct *);
extern void pgd_free(pgd_t *pgd);

extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);

static inline void pte_free_kernel(pte_t *pte)
{
        free_page((unsigned long)pte);
}

static inline void pte_free(struct page *pte)
{
        __free_page(pte);
}


#define __pte_free_tlb(tlb,pte) tlb_remove_page((tlb),(pte))

/*
 * allocating and freeing a pmd is trivial: the 1-entry pmd is
 * inside the pgd, so has no extra memory associated with it.
 * (In the PAE case we free the pmds as part of the pgd.)
 */

#define pmd_alloc_one(mm, addr)         ({ BUG(); ((pmd_t *)2); })
#define pmd_free(x)                     do { } while (0)
#define __pmd_free_tlb(tlb,x)           do { } while (0)
#define pgd_populate(mm, pmd, pte)      BUG()

#define check_pgt_cache()       do { } while (0)

#endif /* _I386_PGALLOC_H */