projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3b827c1b JF |
1 | #ifndef _XEN_MMU_H |
| 2 | ||
| 3 | #include <linux/linkage.h> | |
| 4 | #include <asm/page.h> | |
| 5 | ||
| f6433706 MM |
6 | enum pt_level { |
| 7 | PT_PGD, | |
| 8 | PT_PUD, | |
| 9 | PT_PMD, | |
| 10 | PT_PTE | |
| 11 | }; | |
| 12 | ||
| f87e4cac JF |
13 | /* |
| 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. | |
| 17 | * | |
| 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 | |
| 20 | * of cr3. | |
| 21 | */ | |
| 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)) | |
| 24 | ||
| 25 | ||
| 3b827c1b JF |
26 | void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); |
| 27 | ||
| 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); | |
| 32 | ||
| 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); | |
| 36 | ||
| 37 | void xen_pgd_pin(pgd_t *pgd); | |
| f4f97b3e | 38 | //void xen_pgd_unpin(pgd_t *pgd); |
| 3b827c1b | 39 | |
| 28499143 JF |
40 | pteval_t xen_pte_val(pte_t); |
| 41 | pmdval_t xen_pmd_val(pmd_t); | |
| 42 | pgdval_t xen_pgd_val(pgd_t); | |
| 3b827c1b | 43 | |
| 28499143 JF |
44 | pte_t xen_make_pte(pteval_t); |
| 45 | pmd_t xen_make_pmd(pmdval_t); | |
| 46 | pgd_t xen_make_pgd(pgdval_t); | |
| 3b827c1b JF |
47 | |
| 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); | |
| 54 | ||
| 3b827c1b | 55 | #endif /* _XEN_MMU_H */ |