1 #ifndef _XEN_MMU_H
2
3 #include <linux/linkage.h>
4 #include <asm/page.h>
5
6 enum pt_level {
7 PT_PGD,
8 PT_PUD,
9 PT_PMD,
10 PT_PTE
11 };
12
13
14 bool __set_phys_to_machine(unsigned long pfn, unsigned long mfn);
15 bool install_p2mtop_page(unsigned long pfn, unsigned long *p);
16
17 void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
18
19
20 void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
21 void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
22 void xen_exit_mmap(struct mm_struct *mm);
23
24 pteval_t xen_pte_val(pte_t);
25 pmdval_t xen_pmd_val(pmd_t);
26 pgdval_t xen_pgd_val(pgd_t);
27
28 pte_t xen_make_pte(pteval_t);
29 pmd_t xen_make_pmd(pmdval_t);
30 pgd_t xen_make_pgd(pgdval_t);
31
32 void xen_set_pte(pte_t *ptep, pte_t pteval);
33 void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
34 pte_t *ptep, pte_t pteval);
35
36 #ifdef CONFIG_X86_PAE
37 void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
38 void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
39 void xen_pmd_clear(pmd_t *pmdp);
40 #endif /* CONFIG_X86_PAE */
41
42 void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
43 void xen_set_pud(pud_t *ptr, pud_t val);
44 void xen_set_pmd_hyper(pmd_t *pmdp, pmd_t pmdval);
45 void xen_set_pud_hyper(pud_t *ptr, pud_t val);
46
47 #if PAGETABLE_LEVELS == 4
48 pudval_t xen_pud_val(pud_t pud);
49 pud_t xen_make_pud(pudval_t pudval);
50 void xen_set_pgd(pgd_t *pgdp, pgd_t pgd);
51 void xen_set_pgd_hyper(pgd_t *pgdp, pgd_t pgd);
52 #endif
53
54 pgd_t *xen_get_user_pgd(pgd_t *pgd);
55
56 pte_t xen_ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
57 void xen_ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr,
58 pte_t *ptep, pte_t pte);
59
60 unsigned long xen_read_cr2_direct(void);
61
62 extern const struct pv_mmu_ops xen_mmu_ops;
63 #endif /* _XEN_MMU_H */
64
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