| #ifndef _ASM_X86_PGTABLE_H |
| #define _ASM_X86_PGTABLE_H |
| |
| #include <asm/page.h> |
| #include <asm/e820.h> |
| |
| #include <asm/pgtable_types.h> |
| |
| /* |
| * Macro to mark a page protection value as UC- |
| */ |
| #define pgprot_noncached(prot) \ |
| ((boot_cpu_data.x86 > 3) \ |
| ? (__pgprot(pgprot_val(prot) | _PAGE_CACHE_UC_MINUS)) \ |
| : (prot)) |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <asm/x86_init.h> |
| |
| /* |
| * ZERO_PAGE is a global shared page that is always zero: used |
| * for zero-mapped memory areas etc.. |
| */ |
| extern unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)]; |
| #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page)) |
| |
| extern spinlock_t pgd_lock; |
| extern struct list_head pgd_list; |
| |
| extern struct mm_struct *pgd_page_get_mm(struct page *page); |
| |
| #ifdef CONFIG_PARAVIRT |
| #include <asm/paravirt.h> |
| #else /* !CONFIG_PARAVIRT */ |
| #define set_pte(ptep, pte) native_set_pte(ptep, pte) |
| #define set_pte_at(mm, addr, ptep, pte) native_set_pte_at(mm, addr, ptep, pte) |
| #define set_pmd_at(mm, addr, pmdp, pmd) native_set_pmd_at(mm, addr, pmdp, pmd) |
| |
| #define set_pte_atomic(ptep, pte) \ |
| native_set_pte_atomic(ptep, pte) |
| |
| #define set_pmd(pmdp, pmd) native_set_pmd(pmdp, pmd) |
| |
| #ifndef __PAGETABLE_PUD_FOLDED |
| #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd) |
| #define pgd_clear(pgd) native_pgd_clear(pgd) |
| #endif |
| |
| #ifndef set_pud |
| # define set_pud(pudp, pud) native_set_pud(pudp, pud) |
| #endif |
| |
| #ifndef __PAGETABLE_PMD_FOLDED |
| #define pud_clear(pud) native_pud_clear(pud) |
| #endif |
| |
| #define pte_clear(mm, addr, ptep) native_pte_clear(mm, addr, ptep) |
| #define pmd_clear(pmd) native_pmd_clear(pmd) |
| |
| #define pte_update(mm, addr, ptep) do { } while (0) |
| #define pte_update_defer(mm, addr, ptep) do { } while (0) |
| #define pmd_update(mm, addr, ptep) do { } while (0) |
| #define pmd_update_defer(mm, addr, ptep) do { } while (0) |
| |
| #define pgd_val(x) native_pgd_val(x) |
| #define __pgd(x) native_make_pgd(x) |
| |
| #ifndef __PAGETABLE_PUD_FOLDED |
| #define pud_val(x) native_pud_val(x) |
| #define __pud(x) native_make_pud(x) |
| #endif |
| |
| #ifndef __PAGETABLE_PMD_FOLDED |
| #define pmd_val(x) native_pmd_val(x) |
| #define __pmd(x) native_make_pmd(x) |
| #endif |
| |
| #define pte_val(x) native_pte_val(x) |
| #define __pte(x) native_make_pte(x) |
| |
| #define arch_end_context_switch(prev) do {} while(0) |
| |
| #endif /* CONFIG_PARAVIRT */ |
| |
| /* |
| * The following only work if pte_present() is true. |
| * Undefined behaviour if not.. |
| */ |
| static inline int pte_dirty(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_DIRTY; |
| } |
| |
| static inline int pte_young(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_ACCESSED; |
| } |
| |
| static inline int pmd_young(pmd_t pmd) |
| { |
| return pmd_flags(pmd) & _PAGE_ACCESSED; |
| } |
| |
| static inline int pte_write(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_RW; |
| } |
| |
| static inline int pte_file(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_FILE; |
| } |
| |
| static inline int pte_huge(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_PSE; |
| } |
| |
| static inline int pte_global(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_GLOBAL; |
| } |
| |
| static inline int pte_exec(pte_t pte) |
| { |
| return !(pte_flags(pte) & _PAGE_NX); |
| } |
| |
| static inline int pte_special(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_SPECIAL; |
| } |
| |
| static inline unsigned long pte_pfn(pte_t pte) |
| { |
| return (pte_val(pte) & PTE_PFN_MASK) >> PAGE_SHIFT; |
| } |
| |
| static inline unsigned long pmd_pfn(pmd_t pmd) |
| { |
| return (pmd_val(pmd) & PTE_PFN_MASK) >> PAGE_SHIFT; |
| } |
| |
| #define pte_page(pte) pfn_to_page(pte_pfn(pte)) |
| |
| static inline int pmd_large(pmd_t pte) |
| { |
| return (pmd_flags(pte) & (_PAGE_PSE | _PAGE_PRESENT)) == |
| (_PAGE_PSE | _PAGE_PRESENT); |
| } |
| |
| #ifdef CONFIG_TRANSPARENT_HUGEPAGE |
| static inline int pmd_trans_splitting(pmd_t pmd) |
| { |
| return pmd_val(pmd) & _PAGE_SPLITTING; |
| } |
| |
| static inline int pmd_trans_huge(pmd_t pmd) |
| { |
| return pmd_val(pmd) & _PAGE_PSE; |
| } |
| #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ |
| |
| static inline pte_t pte_set_flags(pte_t pte, pteval_t set) |
| { |
| pteval_t v = native_pte_val(pte); |
| |
| return native_make_pte(v | set); |
| } |
| |
| static inline pte_t pte_clear_flags(pte_t pte, pteval_t clear) |
| { |
| pteval_t v = native_pte_val(pte); |
| |
| return native_make_pte(v & ~clear); |
| } |
| |
| static inline pte_t pte_mkclean(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_DIRTY); |
| } |
| |
| static inline pte_t pte_mkold(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_ACCESSED); |
| } |
| |
| static inline pte_t pte_wrprotect(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_RW); |
| } |
| |
| static inline pte_t pte_mkexec(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_NX); |
| } |
| |
| static inline pte_t pte_mkdirty(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_DIRTY); |
| } |
| |
| static inline pte_t pte_mkyoung(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_ACCESSED); |
| } |
| |
| static inline pte_t pte_mkwrite(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_RW); |
| } |
| |
| static inline pte_t pte_mkhuge(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_PSE); |
| } |
| |
| static inline pte_t pte_clrhuge(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_PSE); |
| } |
| |
| static inline pte_t pte_mkglobal(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_GLOBAL); |
| } |
| |
| static inline pte_t pte_clrglobal(pte_t pte) |
| { |
| return pte_clear_flags(pte, _PAGE_GLOBAL); |
| } |
| |
| static inline pte_t pte_mkspecial(pte_t pte) |
| { |
| return pte_set_flags(pte, _PAGE_SPECIAL); |
| } |
| |
| static inline pmd_t pmd_set_flags(pmd_t pmd, pmdval_t set) |
| { |
| pmdval_t v = native_pmd_val(pmd); |
| |
| return __pmd(v | set); |
| } |
| |
| static inline pmd_t pmd_clear_flags(pmd_t pmd, pmdval_t clear) |
| { |
| pmdval_t v = native_pmd_val(pmd); |
| |
| return __pmd(v & ~clear); |
| } |
| |
| static inline pmd_t pmd_mkold(pmd_t pmd) |
| { |
| return pmd_clear_flags(pmd, _PAGE_ACCESSED); |
| } |
| |
| static inline pmd_t pmd_wrprotect(pmd_t pmd) |
| { |
| return pmd_clear_flags(pmd, _PAGE_RW); |
| } |
| |
| static inline pmd_t pmd_mkdirty(pmd_t pmd) |
| { |
| return pmd_set_flags(pmd, _PAGE_DIRTY); |
| } |
| |
| static inline pmd_t pmd_mkhuge(pmd_t pmd) |
| { |
| return pmd_set_flags(pmd, _PAGE_PSE); |
| } |
| |
| static inline pmd_t pmd_mkyoung(pmd_t pmd) |
| { |
| return pmd_set_flags(pmd, _PAGE_ACCESSED); |
| } |
| |
| static inline pmd_t pmd_mkwrite(pmd_t pmd) |
| { |
| return pmd_set_flags(pmd, _PAGE_RW); |
| } |
| |
| static inline pmd_t pmd_mknotpresent(pmd_t pmd) |
| { |
| return pmd_clear_flags(pmd, _PAGE_PRESENT); |
| } |
| |
| /* |
| * Mask out unsupported bits in a present pgprot. Non-present pgprots |
| * can use those bits for other purposes, so leave them be. |
| */ |
| static inline pgprotval_t massage_pgprot(pgprot_t pgprot) |
| { |
| pgprotval_t protval = pgprot_val(pgprot); |
| |
| if (protval & _PAGE_PRESENT) |
| protval &= __supported_pte_mask; |
| |
| return protval; |
| } |
| |
| static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot) |
| { |
| return __pte(((phys_addr_t)page_nr << PAGE_SHIFT) | |
| massage_pgprot(pgprot)); |
| } |
| |
| static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot) |
| { |
| return __pmd(((phys_addr_t)page_nr << PAGE_SHIFT) | |
| massage_pgprot(pgprot)); |
| } |
| |
| static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) |
| { |
| pteval_t val = pte_val(pte); |
| |
| /* |
| * Chop off the NX bit (if present), and add the NX portion of |
| * the newprot (if present): |
| */ |
| val &= _PAGE_CHG_MASK; |
| val |= massage_pgprot(newprot) & ~_PAGE_CHG_MASK; |
| |
| return __pte(val); |
| } |
| |
| /* mprotect needs to preserve PAT bits when updating vm_page_prot */ |
| #define pgprot_modify pgprot_modify |
| static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot) |
| { |
| pgprotval_t preservebits = pgprot_val(oldprot) & _PAGE_CHG_MASK; |
| pgprotval_t addbits = pgprot_val(newprot); |
| return __pgprot(preservebits | addbits); |
| } |
| |
| #define pte_pgprot(x) __pgprot(pte_flags(x) & PTE_FLAGS_MASK) |
| |
| #define canon_pgprot(p) __pgprot(massage_pgprot(p)) |
| |
| static inline int is_new_memtype_allowed(u64 paddr, unsigned long size, |
| unsigned long flags, |
| unsigned long new_flags) |
| { |
| /* |
| * PAT type is always WB for untracked ranges, so no need to check. |
| */ |
| if (x86_platform.is_untracked_pat_range(paddr, paddr + size)) |
| return 1; |
| |
| /* |
| * Certain new memtypes are not allowed with certain |
| * requested memtype: |
| * - request is uncached, return cannot be write-back |
| * - request is write-combine, return cannot be write-back |
| */ |
| if ((flags == _PAGE_CACHE_UC_MINUS && |
| new_flags == _PAGE_CACHE_WB) || |
| (flags == _PAGE_CACHE_WC && |
| new_flags == _PAGE_CACHE_WB)) { |
| return 0; |
| } |
| |
| return 1; |
| } |
| |
| pmd_t *populate_extra_pmd(unsigned long vaddr); |
| pte_t *populate_extra_pte(unsigned long vaddr); |
| #endif /* __ASSEMBLY__ */ |
| |
| #ifdef CONFIG_X86_32 |
| # include "pgtable_32.h" |
| #else |
| # include "pgtable_64.h" |
| #endif |
| |
| #ifndef __ASSEMBLY__ |
| #include <linux/mm_types.h> |
| |
| static inline int pte_none(pte_t pte) |
| { |
| return !pte.pte; |
| } |
| |
| #define __HAVE_ARCH_PTE_SAME |
| static inline int pte_same(pte_t a, pte_t b) |
| { |
| return a.pte == b.pte; |
| } |
| |
| static inline int pte_present(pte_t a) |
| { |
| return pte_flags(a) & (_PAGE_PRESENT | _PAGE_PROTNONE); |
| } |
| |
| static inline int pte_hidden(pte_t pte) |
| { |
| return pte_flags(pte) & _PAGE_HIDDEN; |
| } |
| |
| static inline int pmd_present(pmd_t pmd) |
| { |
| return pmd_flags(pmd) & _PAGE_PRESENT; |
| } |
| |
| static inline int pmd_none(pmd_t pmd) |
| { |
| /* Only check low word on 32-bit platforms, since it might be |
| out of sync with upper half. */ |
| return (unsigned long)native_pmd_val(pmd) == 0; |
| } |
| |
| static inline unsigned long pmd_page_vaddr(pmd_t pmd) |
| { |
| return (unsigned long)__va(pmd_val(pmd) & PTE_PFN_MASK); |
| } |
| |
| /* |
| * Currently stuck as a macro due to indirect forward reference to |
| * linux/mmzone.h's __section_mem_map_addr() definition: |
| */ |
| #define pmd_page(pmd) pfn_to_page((pmd_val(pmd) & PTE_PFN_MASK) >> PAGE_SHIFT) |
| |
| /* |
| * the pmd page can be thought of an array like this: pmd_t[PTRS_PER_PMD] |
| * |
| * this macro returns the index of the entry in the pmd page which would |
| * control the given virtual address |
| */ |
| static inline unsigned long pmd_index(unsigned long address) |
| { |
| return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1); |
| } |
| |
| /* |
| * Conversion functions: convert a page and protection to a page entry, |
| * and a page entry and page directory to the page they refer to. |
| * |
| * (Currently stuck as a macro because of indirect forward reference |
| * to linux/mm.h:page_to_nid()) |
| */ |
| #define mk_pte(page, pgprot) pfn_pte(page_to_pfn(page), (pgprot)) |
| |
| /* |
| * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE] |
| * |
| * this function returns the index of the entry in the pte page which would |
| * control the given virtual address |
| */ |
| static inline unsigned long pte_index(unsigned long address) |
| { |
| return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1); |
| } |
| |
| static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address) |
| { |
| return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address); |
| } |
| |
| static inline int pmd_bad(pmd_t pmd) |
| { |
| return (pmd_flags(pmd) & ~_PAGE_USER) != _KERNPG_TABLE; |
| } |
| |
| static inline unsigned long pages_to_mb(unsigned long npg) |
| { |
| return npg >> (20 - PAGE_SHIFT); |
| } |
| |
| #define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ |
| remap_pfn_range(vma, vaddr, pfn, size, prot) |
| |
| #if PAGETABLE_LEVELS > 2 |
| static inline int pud_none(pud_t pud) |
| { |
| return native_pud_val(pud) == 0; |
| } |
| |
| static inline int pud_present(pud_t pud) |
| { |
| return pud_flags(pud) & _PAGE_PRESENT; |
| } |
| |
| static inline unsigned long pud_page_vaddr(pud_t pud) |
| { |
| return (unsigned long)__va((unsigned long)pud_val(pud) & PTE_PFN_MASK); |
| } |
| |
| /* |
| * Currently stuck as a macro due to indirect forward reference to |
| * linux/mmzone.h's __section_mem_map_addr() definition: |
| */ |
| #define pud_page(pud) pfn_to_page(pud_val(pud) >> PAGE_SHIFT) |
| |
| /* Find an entry in the second-level page table.. */ |
| static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) |
| { |
| return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address); |
| } |
| |
| static inline int pud_large(pud_t pud) |
| { |
| return (pud_val(pud) & (_PAGE_PSE | _PAGE_PRESENT)) == |
| (_PAGE_PSE | _PAGE_PRESENT); |
| } |
| |
| static inline int pud_bad(pud_t pud) |
| { |
| return (pud_flags(pud) & ~(_KERNPG_TABLE | _PAGE_USER)) != 0; |
| } |
| #else |
| static inline int pud_large(pud_t pud) |
| { |
| return 0; |
| } |
| #endif /* PAGETABLE_LEVELS > 2 */ |
| |
| #if PAGETABLE_LEVELS > 3 |
| static inline int pgd_present(pgd_t pgd) |
| { |
| return pgd_flags(pgd) & _PAGE_PRESENT; |
| } |
| |
| static inline unsigned long pgd_page_vaddr(pgd_t pgd) |
| { |
| return (unsigned long)__va((unsigned long)pgd_val(pgd) & PTE_PFN_MASK); |
| } |
| |
| /* |
| * Currently stuck as a macro due to indirect forward reference to |
| * linux/mmzone.h's __section_mem_map_addr() definition: |
| */ |
| #define pgd_page(pgd) pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT) |
| |
| /* to find an entry in a page-table-directory. */ |
| static inline unsigned long pud_index(unsigned long address) |
| { |
| return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1); |
| } |
| |
| static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address) |
| { |
| return (pud_t *)pgd_page_vaddr(*pgd) + pud_index(address); |
| } |
| |
| static inline int pgd_bad(pgd_t pgd) |
| { |
| return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE; |
| } |
| |
| static inline int pgd_none(pgd_t pgd) |
| { |
| return !native_pgd_val(pgd); |
| } |
| #endif /* PAGETABLE_LEVELS > 3 */ |
| |
| #endif /* __ASSEMBLY__ */ |
| |
| /* |
| * the pgd page can be thought of an array like this: pgd_t[PTRS_PER_PGD] |
| * |
| * this macro returns the index of the entry in the pgd page which would |
| * control the given virtual address |
| */ |
| #define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) |
| |
| /* |
| * pgd_offset() returns a (pgd_t *) |
| * pgd_index() is used get the offset into the pgd page's array of pgd_t's; |
| */ |
| #define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address))) |
| /* |
| * a shortcut which implies the use of the kernel's pgd, instead |
| * of a process's |
| */ |
| #define pgd_offset_k(address) pgd_offset(&init_mm, (address)) |
| |
| |
| #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET) |
| #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY) |
| |
| #ifndef __ASSEMBLY__ |
| |
| extern int direct_gbpages; |
| |
| /* local pte updates need not use xchg for locking */ |
| static inline pte_t native_local_ptep_get_and_clear(pte_t *ptep) |
| { |
| pte_t res = *ptep; |
| |
| /* Pure native function needs no input for mm, addr */ |
| native_pte_clear(NULL, 0, ptep); |
| return res; |
| } |
| |
| static inline pmd_t native_local_pmdp_get_and_clear(pmd_t *pmdp) |
| { |
| pmd_t res = *pmdp; |
| |
| native_pmd_clear(pmdp); |
| return res; |
| } |
| |
| static inline void native_set_pte_at(struct mm_struct *mm, unsigned long addr, |
| pte_t *ptep , pte_t pte) |
| { |
| native_set_pte(ptep, pte); |
| } |
| |
| static inline void native_set_pmd_at(struct mm_struct *mm, unsigned long addr, |
| pmd_t *pmdp , pmd_t pmd) |
| { |
| native_set_pmd(pmdp, pmd); |
| } |
| |
| #ifndef CONFIG_PARAVIRT |
| /* |
| * Rules for using pte_update - it must be called after any PTE update which |
| * has not been done using the set_pte / clear_pte interfaces. It is used by |
| * shadow mode hypervisors to resynchronize the shadow page tables. Kernel PTE |
| * updates should either be sets, clears, or set_pte_atomic for P->P |
| * transitions, which means this hook should only be called for user PTEs. |
| * This hook implies a P->P protection or access change has taken place, which |
| * requires a subsequent TLB flush. The notification can optionally be delayed |
| * until the TLB flush event by using the pte_update_defer form of the |
| * interface, but care must be taken to assure that the flush happens while |
| * still holding the same page table lock so that the shadow and primary pages |
| * do not become out of sync on SMP. |
| */ |
| #define pte_update(mm, addr, ptep) do { } while (0) |
| #define pte_update_defer(mm, addr, ptep) do { } while (0) |
| #endif |
| |
| /* |
| * We only update the dirty/accessed state if we set |
| * the dirty bit by hand in the kernel, since the hardware |
| * will do the accessed bit for us, and we don't want to |
| * race with other CPU's that might be updating the dirty |
| * bit at the same time. |
| */ |
| struct vm_area_struct; |
| |
| #define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS |
| extern int ptep_set_access_flags(struct vm_area_struct *vma, |
| unsigned long address, pte_t *ptep, |
| pte_t entry, int dirty); |
| |
| #define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG |
| extern int ptep_test_and_clear_young(struct vm_area_struct *vma, |
| unsigned long addr, pte_t *ptep); |
| |
| #define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH |
| extern int ptep_clear_flush_young(struct vm_area_struct *vma, |
| unsigned long address, pte_t *ptep); |
| |
| #define __HAVE_ARCH_PTEP_GET_AND_CLEAR |
| static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, |
| pte_t *ptep) |
| { |
| pte_t pte = native_ptep_get_and_clear(ptep); |
| pte_update(mm, addr, ptep); |
| return pte; |
| } |
| |
| #define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL |
| static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, |
| unsigned long addr, pte_t *ptep, |
| int full) |
| { |
| pte_t pte; |
| if (full) { |
| /* |
| * Full address destruction in progress; paravirt does not |
| * care about updates and native needs no locking |
| */ |
| pte = native_local_ptep_get_and_clear(ptep); |
| } else { |
| pte = ptep_get_and_clear(mm, addr, ptep); |
| } |
| return pte; |
| } |
| |
| #define __HAVE_ARCH_PTEP_SET_WRPROTECT |
| static inline void ptep_set_wrprotect(struct mm_struct *mm, |
| unsigned long addr, pte_t *ptep) |
| { |
| clear_bit(_PAGE_BIT_RW, (unsigned long *)&ptep->pte); |
| pte_update(mm, addr, ptep); |
| } |
| |
| #define flush_tlb_fix_spurious_fault(vma, address) |
| |
| #define mk_pmd(page, pgprot) pfn_pmd(page_to_pfn(page), (pgprot)) |
| |
| #define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS |
| extern int pmdp_set_access_flags(struct vm_area_struct *vma, |
| unsigned long address, pmd_t *pmdp, |
| pmd_t entry, int dirty); |
| |
| #define __HAVE_ARCH_PMDP_TEST_AND_CLEAR_YOUNG |
| extern int pmdp_test_and_clear_young(struct vm_area_struct *vma, |
| unsigned long addr, pmd_t *pmdp); |
| |
| #define __HAVE_ARCH_PMDP_CLEAR_YOUNG_FLUSH |
| extern int pmdp_clear_flush_young(struct vm_area_struct *vma, |
| unsigned long address, pmd_t *pmdp); |
| |
| |
| #define __HAVE_ARCH_PMDP_SPLITTING_FLUSH |
| extern void pmdp_splitting_flush(struct vm_area_struct *vma, |
| unsigned long addr, pmd_t *pmdp); |
| |
| #define __HAVE_ARCH_PMD_WRITE |
| static inline int pmd_write(pmd_t pmd) |
| { |
| return pmd_flags(pmd) & _PAGE_RW; |
| } |
| |
| #define __HAVE_ARCH_PMDP_GET_AND_CLEAR |
| static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, unsigned long addr, |
| pmd_t *pmdp) |
| { |
| pmd_t pmd = native_pmdp_get_and_clear(pmdp); |
| pmd_update(mm, addr, pmdp); |
| return pmd; |
| } |
| |
| #define __HAVE_ARCH_PMDP_SET_WRPROTECT |
| static inline void pmdp_set_wrprotect(struct mm_struct *mm, |
| unsigned long addr, pmd_t *pmdp) |
| { |
| clear_bit(_PAGE_BIT_RW, (unsigned long *)pmdp); |
| pmd_update(mm, addr, pmdp); |
| } |
| |
| /* |
| * clone_pgd_range(pgd_t *dst, pgd_t *src, int count); |
| * |
| * dst - pointer to pgd range anwhere on a pgd page |
| * src - "" |
| * count - the number of pgds to copy. |
| * |
| * dst and src can be on the same page, but the range must not overlap, |
| * and must not cross a page boundary. |
| */ |
| static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count) |
| { |
| memcpy(dst, src, count * sizeof(pgd_t)); |
| } |
| |
| |
| #include <asm-generic/pgtable.h> |
| #endif /* __ASSEMBLY__ */ |
| |
| #endif /* _ASM_X86_PGTABLE_H */ |