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