3 #include <linux/linkage.h>
14 * Page-directory addresses above 4GB do not fit into architectural %cr3.
15 * When accessing %cr3, or equivalent field in vcpu_guest_context, guests
16 * must use the following accessor macros to pack/unpack valid MFNs.
18 * Note that Xen is using the fact that the pagetable base is always
19 * page-aligned, and putting the 12 MSB of the address into the 12 LSB
22 #define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20))
23 #define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20))
26 void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags);
28 void xen_set_pte(pte_t *ptep, pte_t pteval);
29 void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
30 pte_t *ptep, pte_t pteval);
31 void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval);
33 void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next);
34 void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm);
35 void xen_exit_mmap(struct mm_struct *mm);
37 void xen_pgd_pin(pgd_t *pgd);
38 //void xen_pgd_unpin(pgd_t *pgd);
40 pteval_t xen_pte_val(pte_t);
41 pmdval_t xen_pmd_val(pmd_t);
42 pgdval_t xen_pgd_val(pgd_t);
44 pte_t xen_make_pte(pteval_t);
45 pmd_t xen_make_pmd(pmdval_t);
46 pgd_t xen_make_pgd(pgdval_t);
48 void xen_set_pte_at(struct mm_struct *mm, unsigned long addr,
49 pte_t *ptep, pte_t pteval);
50 void xen_set_pte_atomic(pte_t *ptep, pte_t pte);
51 void xen_set_pud(pud_t *ptr, pud_t val);
52 void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
53 void xen_pmd_clear(pmd_t *pmdp);
55 #endif /* _XEN_MMU_H */