diff options
Diffstat (limited to 'arch/i386/xen/mmu.h')
-rw-r--r-- | arch/i386/xen/mmu.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/i386/xen/mmu.h b/arch/i386/xen/mmu.h new file mode 100644 index 000000000000..c9ff27f3ac3a --- /dev/null +++ b/arch/i386/xen/mmu.h | |||
@@ -0,0 +1,60 @@ | |||
1 | #ifndef _XEN_MMU_H | ||
2 | |||
3 | #include <linux/linkage.h> | ||
4 | #include <asm/page.h> | ||
5 | |||
6 | /* | ||
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. | ||
10 | * | ||
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 | ||
13 | * of cr3. | ||
14 | */ | ||
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)) | ||
17 | |||
18 | |||
19 | void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); | ||
20 | |||
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); | ||
25 | |||
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); | ||
29 | |||
30 | void xen_pgd_pin(pgd_t *pgd); | ||
31 | //void xen_pgd_unpin(pgd_t *pgd); | ||
32 | |||
33 | #ifdef CONFIG_X86_PAE | ||
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); | ||
37 | |||
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); | ||
41 | |||
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); | ||
48 | |||
49 | |||
50 | #else | ||
51 | unsigned long xen_pte_val(pte_t); | ||
52 | unsigned long xen_pmd_val(pmd_t); | ||
53 | unsigned long xen_pgd_val(pgd_t); | ||
54 | |||
55 | pte_t xen_make_pte(unsigned long); | ||
56 | pmd_t xen_make_pmd(unsigned long); | ||
57 | pgd_t xen_make_pgd(unsigned long); | ||
58 | #endif | ||
59 | |||
60 | #endif /* _XEN_MMU_H */ | ||