linux/arch/x86/xen/mmu.h
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   1#ifndef _XEN_MMU_H
   2
   3#include <linux/linkage.h>
   4#include <asm/page.h>
   5
   6enum pt_level {
   7        PT_PGD,
   8        PT_PUD,
   9        PT_PMD,
  10        PT_PTE
  11};
  12
  13
  14void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
  15
  16
  17void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
  18void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
  19void xen_exit_mmap(struct mm_struct *mm);
  20
  21void xen_pgd_pin(pgd_t *pgd);
  22//void xen_pgd_unpin(pgd_t *pgd);
  23
  24pteval_t xen_pte_val(pte_t);
  25pmdval_t xen_pmd_val(pmd_t);
  26pgdval_t xen_pgd_val(pgd_t);
  27
  28pte_t xen_make_pte(pteval_t);
  29pmd_t xen_make_pmd(pmdval_t);
  30pgd_t xen_make_pgd(pgdval_t);
  31
  32void xen_set_pte(pte_t *ptep, pte_t pteval);
  33void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
  34                    pte_t *ptep, pte_t pteval);
  35
  36#ifdef CONFIG_X86_PAE
  37void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
  38void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
  39void xen_pmd_clear(pmd_t *pmdp);
  40#endif  /* CONFIG_X86_PAE */
  41
  42void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
  43void xen_set_pud(pud_t *ptr, pud_t val);
  44void xen_set_pmd_hyper(pmd_t *pmdp, pmd_t pmdval);
  45void xen_set_pud_hyper(pud_t *ptr, pud_t val);
  46
  47#if PAGETABLE_LEVELS == 4
  48pudval_t xen_pud_val(pud_t pud);
  49pud_t xen_make_pud(pudval_t pudval);
  50void xen_set_pgd(pgd_t *pgdp, pgd_t pgd);
  51void xen_set_pgd_hyper(pgd_t *pgdp, pgd_t pgd);
  52#endif
  53
  54pgd_t *xen_get_user_pgd(pgd_t *pgd);
  55
  56pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
  57void  xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
  58                                  pte_t *ptep, pte_t pte);
  59
  60#endif  /* _XEN_MMU_H */
  61