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author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-18 10:18:39 -0700 |
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committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-07-18 10:18:39 -0700 |
commit | 5cc97bf2d8eaa6cab60727c3eba3e85e29062669 (patch) | |
tree | 975976f2cb37b932d65440e6fb9960be93fc0bd7 /arch/i386/xen/mmu.h | |
parent | 826ea8f22cf612d534f33c492c98f7895043bfd1 (diff) | |
parent | dfdcdd42fdf63452ddd1bed6f49ae2a35dfb5d6c (diff) |
Merge branch 'xen-upstream' of ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
* 'xen-upstream' of ssh://master.kernel.org/pub/scm/linux/kernel/git/jeremy/xen: (44 commits)
xen: disable all non-virtual drivers
xen: use iret directly when possible
xen: suppress abs symbol warnings for unused reloc pointers
xen: Attempt to patch inline versions of common operations
xen: Place vcpu_info structure into per-cpu memory
xen: handle external requests for shutdown, reboot and sysrq
xen: machine operations
xen: add virtual network device driver
xen: add virtual block device driver.
xen: add the Xenbus sysfs and virtual device hotplug driver
xen: Add grant table support
xen: use the hvc console infrastructure for Xen console
xen: hack to prevent bad segment register reload
xen: lazy-mmu operations
xen: Add support for preemption
xen: SMP guest support
xen: Implement sched_clock
xen: Account for stolen time
xen: ignore RW mapping of RO pages in pagetable_init
xen: Complete pagetable pinning
...
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 00000000000..c9ff27f3ac3 --- /dev/null +++ b/arch/i386/xen/mmu.h @@ -0,0 +1,60 @@ +#ifndef _XEN_MMU_H + +#include <linux/linkage.h> +#include <asm/page.h> + +/* + * Page-directory addresses above 4GB do not fit into architectural %cr3. + * When accessing %cr3, or equivalent field in vcpu_guest_context, guests + * must use the following accessor macros to pack/unpack valid MFNs. + * + * Note that Xen is using the fact that the pagetable base is always + * page-aligned, and putting the 12 MSB of the address into the 12 LSB + * of cr3. + */ +#define xen_pfn_to_cr3(pfn) (((unsigned)(pfn) << 12) | ((unsigned)(pfn) >> 20)) +#define xen_cr3_to_pfn(cr3) (((unsigned)(cr3) >> 12) | ((unsigned)(cr3) << 20)) + + +void set_pte_mfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags); + +void xen_set_pte(pte_t *ptep, pte_t pteval); +void xen_set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pteval); +void xen_set_pmd(pmd_t *pmdp, pmd_t pmdval); + +void xen_activate_mm(struct mm_struct *prev, struct mm_struct *next); +void xen_dup_mmap(struct mm_struct *oldmm, struct mm_struct *mm); +void xen_exit_mmap(struct mm_struct *mm); + +void xen_pgd_pin(pgd_t *pgd); +//void xen_pgd_unpin(pgd_t *pgd); + +#ifdef CONFIG_X86_PAE +unsigned long long xen_pte_val(pte_t); +unsigned long long xen_pmd_val(pmd_t); +unsigned long long xen_pgd_val(pgd_t); + +pte_t xen_make_pte(unsigned long long); +pmd_t xen_make_pmd(unsigned long long); +pgd_t xen_make_pgd(unsigned long long); + +void xen_set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pteval); +void xen_set_pte_atomic(pte_t *ptep, pte_t pte); +void xen_set_pud(pud_t *ptr, pud_t val); +void xen_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep); +void xen_pmd_clear(pmd_t *pmdp); + + +#else +unsigned long xen_pte_val(pte_t); +unsigned long xen_pmd_val(pmd_t); +unsigned long xen_pgd_val(pgd_t); + +pte_t xen_make_pte(unsigned long); +pmd_t xen_make_pmd(unsigned long); +pgd_t xen_make_pgd(unsigned long); +#endif + +#endif /* _XEN_MMU_H */ |