2005-04-16 16:20:36 -06:00
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#ifndef _I386_PGALLOC_H
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#define _I386_PGALLOC_H
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#include <linux/threads.h>
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#include <linux/mm.h> /* for struct page */
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2008-01-30 05:33:39 -07:00
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#include <asm/tlb.h>
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#include <asm-generic/tlb.h>
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2005-04-16 16:20:36 -06:00
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2007-02-13 05:26:21 -07:00
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#ifdef CONFIG_PARAVIRT
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#include <asm/paravirt.h>
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#else
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2007-07-17 19:37:03 -06:00
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#define paravirt_alloc_pt(mm, pfn) do { } while (0)
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2008-01-30 05:33:39 -07:00
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#define paravirt_alloc_pd(mm, pfn) do { } while (0)
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2007-02-13 05:26:21 -07:00
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#define paravirt_alloc_pd_clone(pfn, clonepfn, start, count) do { } while (0)
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#define paravirt_release_pt(pfn) do { } while (0)
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#define paravirt_release_pd(pfn) do { } while (0)
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#endif
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2008-01-30 05:33:39 -07:00
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static inline void pmd_populate_kernel(struct mm_struct *mm,
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pmd_t *pmd, pte_t *pte)
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{
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paravirt_alloc_pt(mm, __pa(pte) >> PAGE_SHIFT);
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set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
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}
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2005-04-16 16:20:36 -06:00
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2008-01-30 05:33:39 -07:00
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static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd, struct page *pte)
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{
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unsigned long pfn = page_to_pfn(pte);
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paravirt_alloc_pt(mm, pfn);
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set_pmd(pmd, __pmd(((pteval_t)pfn << PAGE_SHIFT) | _PAGE_TABLE));
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}
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2007-02-13 05:26:21 -07:00
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2005-04-16 16:20:36 -06:00
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/*
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* Allocate and free page tables.
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*/
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extern pgd_t *pgd_alloc(struct mm_struct *);
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extern void pgd_free(pgd_t *pgd);
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extern pte_t *pte_alloc_one_kernel(struct mm_struct *, unsigned long);
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extern struct page *pte_alloc_one(struct mm_struct *, unsigned long);
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static inline void pte_free_kernel(pte_t *pte)
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{
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free_page((unsigned long)pte);
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}
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static inline void pte_free(struct page *pte)
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{
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__free_page(pte);
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}
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2008-01-30 05:33:39 -07:00
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static inline void __pte_free_tlb(struct mmu_gather *tlb, struct page *pte)
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{
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paravirt_release_pt(page_to_pfn(pte));
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tlb_remove_page(tlb, pte);
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}
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2005-04-16 16:20:36 -06:00
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#ifdef CONFIG_X86_PAE
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/*
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* In the PAE case we free the pmds as part of the pgd.
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*/
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2008-01-30 05:33:39 -07:00
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static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
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{
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BUG();
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return (pmd_t *)2;
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}
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static inline void pmd_free(pmd_t *pmd)
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{
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}
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static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd)
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{
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}
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static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
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{
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BUG();
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}
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#endif /* CONFIG_X86_PAE */
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2005-04-16 16:20:36 -06:00
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#endif /* _I386_PGALLOC_H */
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