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Diffstat (limited to 'include/asm-x86/pgtable_64.h')
| -rw-r--r-- | include/asm-x86/pgtable_64.h | 285 |
1 files changed, 0 insertions, 285 deletions
diff --git a/include/asm-x86/pgtable_64.h b/include/asm-x86/pgtable_64.h deleted file mode 100644 index fde9770e53d..00000000000 --- a/include/asm-x86/pgtable_64.h +++ /dev/null @@ -1,285 +0,0 @@ -#ifndef ASM_X86__PGTABLE_64_H -#define ASM_X86__PGTABLE_64_H - -#include <linux/const.h> -#ifndef __ASSEMBLY__ - -/* - * This file contains the functions and defines necessary to modify and use - * the x86-64 page table tree. - */ -#include <asm/processor.h> -#include <linux/bitops.h> -#include <linux/threads.h> -#include <asm/pda.h> - -extern pud_t level3_kernel_pgt[512]; -extern pud_t level3_ident_pgt[512]; -extern pmd_t level2_kernel_pgt[512]; -extern pmd_t level2_fixmap_pgt[512]; -extern pmd_t level2_ident_pgt[512]; -extern pgd_t init_level4_pgt[]; - -#define swapper_pg_dir init_level4_pgt - -extern void paging_init(void); - -#endif /* !__ASSEMBLY__ */ - -#define SHARED_KERNEL_PMD 0 - -/* - * PGDIR_SHIFT determines what a top-level page table entry can map - */ -#define PGDIR_SHIFT 39 -#define PTRS_PER_PGD 512 - -/* - * 3rd level page - */ -#define PUD_SHIFT 30 -#define PTRS_PER_PUD 512 - -/* - * PMD_SHIFT determines the size of the area a middle-level - * page table can map - */ -#define PMD_SHIFT 21 -#define PTRS_PER_PMD 512 - -/* - * entries per page directory level - */ -#define PTRS_PER_PTE 512 - -#ifndef __ASSEMBLY__ - -#define pte_ERROR(e) \ - printk("%s:%d: bad pte %p(%016lx).\n", \ - __FILE__, __LINE__, &(e), pte_val(e)) -#define pmd_ERROR(e) \ - printk("%s:%d: bad pmd %p(%016lx).\n", \ - __FILE__, __LINE__, &(e), pmd_val(e)) -#define pud_ERROR(e) \ - printk("%s:%d: bad pud %p(%016lx).\n", \ - __FILE__, __LINE__, &(e), pud_val(e)) -#define pgd_ERROR(e) \ - printk("%s:%d: bad pgd %p(%016lx).\n", \ - __FILE__, __LINE__, &(e), pgd_val(e)) - -#define pgd_none(x) (!pgd_val(x)) -#define pud_none(x) (!pud_val(x)) - -struct mm_struct; - -void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte); - - -static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, - pte_t *ptep) -{ - *ptep = native_make_pte(0); -} - -static inline void native_set_pte(pte_t *ptep, pte_t pte) -{ - *ptep = pte; -} - -static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte) -{ - native_set_pte(ptep, pte); -} - -static inline pte_t native_ptep_get_and_clear(pte_t *xp) -{ -#ifdef CONFIG_SMP - return native_make_pte(xchg(&xp->pte, 0)); -#else - /* native_local_ptep_get_and_clear, - but duplicated because of cyclic dependency */ - pte_t ret = *xp; - native_pte_clear(NULL, 0, xp); - return ret; -#endif -} - -static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd) -{ - *pmdp = pmd; -} - -static inline void native_pmd_clear(pmd_t *pmd) -{ - native_set_pmd(pmd, native_make_pmd(0)); -} - -static inline void native_set_pud(pud_t *pudp, pud_t pud) -{ - *pudp = pud; -} - -static inline void native_pud_clear(pud_t *pud) -{ - native_set_pud(pud, native_make_pud(0)); -} - -static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd) -{ - *pgdp = pgd; -} - -static inline void native_pgd_clear(pgd_t *pgd) -{ - native_set_pgd(pgd, native_make_pgd(0)); -} - -#define pte_same(a, b) ((a).pte == (b).pte) - -#endif /* !__ASSEMBLY__ */ - -#define PMD_SIZE (_AC(1, UL) << PMD_SHIFT) -#define PMD_MASK (~(PMD_SIZE - 1)) -#define PUD_SIZE (_AC(1, UL) << PUD_SHIFT) -#define PUD_MASK (~(PUD_SIZE - 1)) -#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT) -#define PGDIR_MASK (~(PGDIR_SIZE - 1)) - - -#define MAXMEM _AC(0x00003fffffffffff, UL) -#define VMALLOC_START _AC(0xffffc20000000000, UL) -#define VMALLOC_END _AC(0xffffe1ffffffffff, UL) -#define VMEMMAP_START _AC(0xffffe20000000000, UL) -#define MODULES_VADDR _AC(0xffffffffa0000000, UL) -#define MODULES_END _AC(0xffffffffff000000, UL) -#define MODULES_LEN (MODULES_END - MODULES_VADDR) - -#ifndef __ASSEMBLY__ - -static inline int pgd_bad(pgd_t pgd) -{ - return (pgd_val(pgd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE; -} - -static inline int pud_bad(pud_t pud) -{ - return (pud_val(pud) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE; -} - -static inline int pmd_bad(pmd_t pmd) -{ - return (pmd_val(pmd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE; -} - -#define pte_none(x) (!pte_val((x))) -#define pte_present(x) (pte_val((x)) & (_PAGE_PRESENT | _PAGE_PROTNONE)) - -#define pages_to_mb(x) ((x) >> (20 - PAGE_SHIFT)) /* FIXME: is this right? */ - -/* - * Macro to mark a page protection value as "uncacheable". - */ -#define pgprot_noncached(prot) \ - (__pgprot(pgprot_val((prot)) | _PAGE_PCD | _PAGE_PWT)) - -/* - * Conversion functions: convert a page and protection to a page entry, - * and a page entry and page directory to the page they refer to. - */ - -/* - * Level 4 access. - */ -#define pgd_page_vaddr(pgd) \ - ((unsigned long)__va((unsigned long)pgd_val((pgd)) & PTE_PFN_MASK)) -#define pgd_page(pgd) (pfn_to_page(pgd_val((pgd)) >> PAGE_SHIFT)) -#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_PRESENT) -static inline int pgd_large(pgd_t pgd) { return 0; } -#define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE) - -/* PUD - Level3 access */ -/* to find an entry in a page-table-directory. */ -#define pud_page_vaddr(pud) \ - ((unsigned long)__va(pud_val((pud)) & PHYSICAL_PAGE_MASK)) -#define pud_page(pud) (pfn_to_page(pud_val((pud)) >> PAGE_SHIFT)) -#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)) -#define pud_offset(pgd, address) \ - ((pud_t *)pgd_page_vaddr(*(pgd)) + pud_index((address))) -#define pud_present(pud) (pud_val((pud)) & _PAGE_PRESENT) - -static inline int pud_large(pud_t pte) -{ - return (pud_val(pte) & (_PAGE_PSE | _PAGE_PRESENT)) == - (_PAGE_PSE | _PAGE_PRESENT); -} - -/* PMD - Level 2 access */ -#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val((pmd)) & PTE_PFN_MASK)) -#define pmd_page(pmd) (pfn_to_page(pmd_val((pmd)) >> PAGE_SHIFT)) - -#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) -#define pmd_offset(dir, address) ((pmd_t *)pud_page_vaddr(*(dir)) + \ - pmd_index(address)) -#define pmd_none(x) (!pmd_val((x))) -#define pmd_present(x) (pmd_val((x)) & _PAGE_PRESENT) -#define pfn_pmd(nr, prot) (__pmd(((nr) << PAGE_SHIFT) | pgprot_val((prot)))) -#define pmd_pfn(x) ((pmd_val((x)) & __PHYSICAL_MASK) >> PAGE_SHIFT) - -#define pte_to_pgoff(pte) ((pte_val((pte)) & PHYSICAL_PAGE_MASK) >> PAGE_SHIFT) -#define pgoff_to_pte(off) ((pte_t) { .pte = ((off) << PAGE_SHIFT) | \ - _PAGE_FILE }) -#define PTE_FILE_MAX_BITS __PHYSICAL_MASK_SHIFT - -/* PTE - Level 1 access. */ - -/* page, protection -> pte */ -#define mk_pte(page, pgprot) pfn_pte(page_to_pfn((page)), (pgprot)) - -#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) -#define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_vaddr(*(dir)) + \ - pte_index((address))) - -/* x86-64 always has all page tables mapped. */ -#define pte_offset_map(dir, address) pte_offset_kernel((dir), (address)) -#define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address)) -#define pte_unmap(pte) /* NOP */ -#define pte_unmap_nested(pte) /* NOP */ - -#define update_mmu_cache(vma, address, pte) do { } while (0) - -extern int direct_gbpages; - -/* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 1) & 0x3f) -#define __swp_offset(x) ((x).val >> 8) -#define __swp_entry(type, offset) ((swp_entry_t) { ((type) << 1) | \ - ((offset) << 8) }) -#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val((pte)) }) -#define __swp_entry_to_pte(x) ((pte_t) { .pte = (x).val }) - -extern int kern_addr_valid(unsigned long addr); -extern void cleanup_highmap(void); - -#define io_remap_pfn_range(vma, vaddr, pfn, size, prot) \ - remap_pfn_range(vma, vaddr, pfn, size, prot) - -#define HAVE_ARCH_UNMAPPED_AREA -#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN - -#define pgtable_cache_init() do { } while (0) -#define check_pgt_cache() do { } while (0) - -#define PAGE_AGP PAGE_KERNEL_NOCACHE -#define HAVE_PAGE_AGP 1 - -/* fs/proc/kcore.c */ -#define kc_vaddr_to_offset(v) ((v) & __VIRTUAL_MASK) -#define kc_offset_to_vaddr(o) \ - (((o) & (1UL << (__VIRTUAL_MASK_SHIFT - 1))) \ - ? ((o) | ~__VIRTUAL_MASK) \ - : (o)) - -#define __HAVE_ARCH_PTE_SAME -#endif /* !__ASSEMBLY__ */ - -#endif /* ASM_X86__PGTABLE_64_H */ |