summaryrefslogtreecommitdiff
path: root/libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h
diff options
context:
space:
mode:
authorSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2013-07-27 22:15:01 +0000
commit7996a3d79d55b7f879dfd62e202bbfe2963718d3 (patch)
tree8d9f6759fec4099b9be503c11c7ed174f7204980 /libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h
parent4fbe7358c7747a9165f776eb19addbb9baf7def2 (diff)
really properly move files
Diffstat (limited to 'libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h')
-rw-r--r--libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h344
1 files changed, 0 insertions, 344 deletions
diff --git a/libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h b/libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h
deleted file mode 100644
index 8e6d0ca7..00000000
--- a/libdde-linux26/libdde_linux26/contrib/include/asm-generic/pgtable.h
+++ /dev/null
@@ -1,344 +0,0 @@
-#ifndef _ASM_GENERIC_PGTABLE_H
-#define _ASM_GENERIC_PGTABLE_H
-
-#ifndef __ASSEMBLY__
-#ifdef CONFIG_MMU
-
-#ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
-/*
- * Largely same as above, but only sets the access flags (dirty,
- * accessed, and writable). Furthermore, we know it always gets set
- * to a "more permissive" setting, which allows most architectures
- * to optimize this. We return whether the PTE actually changed, which
- * in turn instructs the caller to do things like update__mmu_cache.
- * This used to be done in the caller, but sparc needs minor faults to
- * force that call on sun4c so we changed this macro slightly
- */
-#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-({ \
- int __changed = !pte_same(*(__ptep), __entry); \
- if (__changed) { \
- set_pte_at((__vma)->vm_mm, (__address), __ptep, __entry); \
- flush_tlb_page(__vma, __address); \
- } \
- __changed; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG
-#define ptep_test_and_clear_young(__vma, __address, __ptep) \
-({ \
- pte_t __pte = *(__ptep); \
- int r = 1; \
- if (!pte_young(__pte)) \
- r = 0; \
- else \
- set_pte_at((__vma)->vm_mm, (__address), \
- (__ptep), pte_mkold(__pte)); \
- r; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH
-#define ptep_clear_flush_young(__vma, __address, __ptep) \
-({ \
- int __young; \
- __young = ptep_test_and_clear_young(__vma, __address, __ptep); \
- if (__young) \
- flush_tlb_page(__vma, __address); \
- __young; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR
-#define ptep_get_and_clear(__mm, __address, __ptep) \
-({ \
- pte_t __pte = *(__ptep); \
- pte_clear((__mm), (__address), (__ptep)); \
- __pte; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL
-#define ptep_get_and_clear_full(__mm, __address, __ptep, __full) \
-({ \
- pte_t __pte; \
- __pte = ptep_get_and_clear((__mm), (__address), (__ptep)); \
- __pte; \
-})
-#endif
-
-/*
- * Some architectures may be able to avoid expensive synchronization
- * primitives when modifications are made to PTE's which are already
- * not present, or in the process of an address space destruction.
- */
-#ifndef __HAVE_ARCH_PTE_CLEAR_NOT_PRESENT_FULL
-#define pte_clear_not_present_full(__mm, __address, __ptep, __full) \
-do { \
- pte_clear((__mm), (__address), (__ptep)); \
-} while (0)
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_CLEAR_FLUSH
-#define ptep_clear_flush(__vma, __address, __ptep) \
-({ \
- pte_t __pte; \
- __pte = ptep_get_and_clear((__vma)->vm_mm, __address, __ptep); \
- flush_tlb_page(__vma, __address); \
- __pte; \
-})
-#endif
-
-#ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
-struct mm_struct;
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long address, pte_t *ptep)
-{
- pte_t old_pte = *ptep;
- set_pte_at(mm, address, ptep, pte_wrprotect(old_pte));
-}
-#endif
-
-#ifndef __HAVE_ARCH_PTE_SAME
-#define pte_same(A,B) (pte_val(A) == pte_val(B))
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
-#define page_test_dirty(page) (0)
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_CLEAR_DIRTY
-#define page_clear_dirty(page) do { } while (0)
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY
-#define pte_maybe_dirty(pte) pte_dirty(pte)
-#else
-#define pte_maybe_dirty(pte) (1)
-#endif
-
-#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG
-#define page_test_and_clear_young(page) (0)
-#endif
-
-#ifndef __HAVE_ARCH_PGD_OFFSET_GATE
-#define pgd_offset_gate(mm, addr) pgd_offset(mm, addr)
-#endif
-
-#ifndef __HAVE_ARCH_MOVE_PTE
-#define move_pte(pte, prot, old_addr, new_addr) (pte)
-#endif
-
-#ifndef pgprot_writecombine
-#define pgprot_writecombine pgprot_noncached
-#endif
-
-/*
- * When walking page tables, get the address of the next boundary,
- * or the end address of the range if that comes earlier. Although no
- * vma end wraps to 0, rounded up __boundary may wrap to 0 throughout.
- */
-
-#define pgd_addr_end(addr, end) \
-({ unsigned long __boundary = ((addr) + PGDIR_SIZE) & PGDIR_MASK; \
- (__boundary - 1 < (end) - 1)? __boundary: (end); \
-})
-
-#ifndef pud_addr_end
-#define pud_addr_end(addr, end) \
-({ unsigned long __boundary = ((addr) + PUD_SIZE) & PUD_MASK; \
- (__boundary - 1 < (end) - 1)? __boundary: (end); \
-})
-#endif
-
-#ifndef pmd_addr_end
-#define pmd_addr_end(addr, end) \
-({ unsigned long __boundary = ((addr) + PMD_SIZE) & PMD_MASK; \
- (__boundary - 1 < (end) - 1)? __boundary: (end); \
-})
-#endif
-
-/*
- * When walking page tables, we usually want to skip any p?d_none entries;
- * and any p?d_bad entries - reporting the error before resetting to none.
- * Do the tests inline, but report and clear the bad entry in mm/memory.c.
- */
-void pgd_clear_bad(pgd_t *);
-void pud_clear_bad(pud_t *);
-void pmd_clear_bad(pmd_t *);
-
-static inline int pgd_none_or_clear_bad(pgd_t *pgd)
-{
- if (pgd_none(*pgd))
- return 1;
- if (unlikely(pgd_bad(*pgd))) {
- pgd_clear_bad(pgd);
- return 1;
- }
- return 0;
-}
-
-static inline int pud_none_or_clear_bad(pud_t *pud)
-{
- if (pud_none(*pud))
- return 1;
- if (unlikely(pud_bad(*pud))) {
- pud_clear_bad(pud);
- return 1;
- }
- return 0;
-}
-
-static inline int pmd_none_or_clear_bad(pmd_t *pmd)
-{
- if (pmd_none(*pmd))
- return 1;
- if (unlikely(pmd_bad(*pmd))) {
- pmd_clear_bad(pmd);
- return 1;
- }
- return 0;
-}
-
-static inline pte_t __ptep_modify_prot_start(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep)
-{
- /*
- * Get the current pte state, but zero it out to make it
- * non-present, preventing the hardware from asynchronously
- * updating it.
- */
- return ptep_get_and_clear(mm, addr, ptep);
-}
-
-static inline void __ptep_modify_prot_commit(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- /*
- * The pte is non-present, so there's no hardware state to
- * preserve.
- */
- set_pte_at(mm, addr, ptep, pte);
-}
-
-#ifndef __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION
-/*
- * Start a pte protection read-modify-write transaction, which
- * protects against asynchronous hardware modifications to the pte.
- * The intention is not to prevent the hardware from making pte
- * updates, but to prevent any updates it may make from being lost.
- *
- * This does not protect against other software modifications of the
- * pte; the appropriate pte lock must be held over the transation.
- *
- * Note that this interface is intended to be batchable, meaning that
- * ptep_modify_prot_commit may not actually update the pte, but merely
- * queue the update to be done at some later time. The update must be
- * actually committed before the pte lock is released, however.
- */
-static inline pte_t ptep_modify_prot_start(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep)
-{
- return __ptep_modify_prot_start(mm, addr, ptep);
-}
-
-/*
- * Commit an update to a pte, leaving any hardware-controlled bits in
- * the PTE unmodified.
- */
-static inline void ptep_modify_prot_commit(struct mm_struct *mm,
- unsigned long addr,
- pte_t *ptep, pte_t pte)
-{
- __ptep_modify_prot_commit(mm, addr, ptep, pte);
-}
-#endif /* __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION */
-#endif /* CONFIG_MMU */
-
-/*
- * A facility to provide lazy MMU batching. This allows PTE updates and
- * page invalidations to be delayed until a call to leave lazy MMU mode
- * is issued. Some architectures may benefit from doing this, and it is
- * beneficial for both shadow and direct mode hypervisors, which may batch
- * the PTE updates which happen during this window. Note that using this
- * interface requires that read hazards be removed from the code. A read
- * hazard could result in the direct mode hypervisor case, since the actual
- * write to the page tables may not yet have taken place, so reads though
- * a raw PTE pointer after it has been modified are not guaranteed to be
- * up to date. This mode can only be entered and left under the protection of
- * the page table locks for all page tables which may be modified. In the UP
- * case, this is required so that preemption is disabled, and in the SMP case,
- * it must synchronize the delayed page table writes properly on other CPUs.
- */
-#ifndef __HAVE_ARCH_ENTER_LAZY_MMU_MODE
-#define arch_enter_lazy_mmu_mode() do {} while (0)
-#define arch_leave_lazy_mmu_mode() do {} while (0)
-#define arch_flush_lazy_mmu_mode() do {} while (0)
-#endif
-
-/*
- * A facility to provide batching of the reload of page tables with the
- * actual context switch code for paravirtualized guests. By convention,
- * only one of the lazy modes (CPU, MMU) should be active at any given
- * time, entry should never be nested, and entry and exits should always
- * be paired. This is for sanity of maintaining and reasoning about the
- * kernel code.
- */
-#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE
-#define arch_enter_lazy_cpu_mode() do {} while (0)
-#define arch_leave_lazy_cpu_mode() do {} while (0)
-#define arch_flush_lazy_cpu_mode() do {} while (0)
-#endif
-
-#ifndef __HAVE_PFNMAP_TRACKING
-/*
- * Interface that can be used by architecture code to keep track of
- * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn)
- *
- * track_pfn_vma_new is called when a _new_ pfn mapping is being established
- * for physical range indicated by pfn and size.
- */
-static inline int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t *prot,
- unsigned long pfn, unsigned long size)
-{
- return 0;
-}
-
-/*
- * Interface that can be used by architecture code to keep track of
- * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn)
- *
- * track_pfn_vma_copy is called when vma that is covering the pfnmap gets
- * copied through copy_page_range().
- */
-static inline int track_pfn_vma_copy(struct vm_area_struct *vma)
-{
- return 0;
-}
-
-/*
- * Interface that can be used by architecture code to keep track of
- * memory type of pfn mappings (remap_pfn_range, vm_insert_pfn)
- *
- * untrack_pfn_vma is called while unmapping a pfnmap for a region.
- * untrack can be called for a specific region indicated by pfn and size or
- * can be for the entire vma (in which case size can be zero).
- */
-static inline void untrack_pfn_vma(struct vm_area_struct *vma,
- unsigned long pfn, unsigned long size)
-{
-}
-#else
-extern int track_pfn_vma_new(struct vm_area_struct *vma, pgprot_t *prot,
- unsigned long pfn, unsigned long size);
-extern int track_pfn_vma_copy(struct vm_area_struct *vma);
-extern void untrack_pfn_vma(struct vm_area_struct *vma, unsigned long pfn,
- unsigned long size);
-#endif
-
-#endif /* !__ASSEMBLY__ */
-
-#endif /* _ASM_GENERIC_PGTABLE_H */