@@ -305,6 +305,7 @@ extern inline pmd_t * pmd_offset(pud_t * dir, unsigned long address)
smp_read_barrier_depends(); /* see above */
return ret;
}
+#define pmd_offset pmd_offset
/* Find an entry in the third-level page table.. */
extern inline pte_t * pte_offset_kernel(pmd_t * dir, unsigned long address)
@@ -187,6 +187,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
{
return (pmd_t *)pud;
}
+#define pmd_offset pmd_offset
#define pmd_large(pmd) (pmd_val(pmd) & 2)
#define pmd_leaf(pmd) (pmd_val(pmd) & 2)
@@ -133,13 +133,6 @@ static inline pmd_t *pud_page_vaddr(pud_t pud)
return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK);
}
-/* Find an entry in the second-level page table.. */
-#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
-static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
-{
- return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
-}
-
#define pmd_bad(pmd) (!(pmd_val(pmd) & 2))
#define copy_pmd(pmdpd,pmdps) \
@@ -22,7 +22,6 @@
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
-#define pmd_offset(a, b) ((void *)0)
/* FIXME */
/*
* PMD_SHIFT determines the size of the area a second-level page table can map
@@ -566,11 +566,13 @@ static inline phys_addr_t pud_page_paddr(pud_t pud)
return __pud_to_phys(pud);
}
-/* Find an entry in the second-level page table. */
-#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
+static inline unsigned long pud_page_vaddr(pud_t pud)
+{
+ return (unsigned long)__va(pud_page_paddr(pud));
+}
+/* Find an entry in the second-level page table. */
#define pmd_offset_phys(dir, addr) (pud_page_paddr(READ_ONCE(*(dir))) + pmd_index(addr) * sizeof(pmd_t))
-#define pmd_offset(dir, addr) ((pmd_t *)__va(pmd_offset_phys((dir), (addr))))
#define pmd_set_fixmap(addr) ((pmd_t *)set_fixmap_offset(FIX_PMD, addr))
#define pmd_set_fixmap_offset(pud, addr) pmd_set_fixmap(pmd_offset_phys(pud, addr))
@@ -26,7 +26,6 @@
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
-#define pmd_offset(a, b) ((void *)0)
#define pmd_none(x) (!pmd_val(x))
#define pmd_present(x) (pmd_val(x))
#define pmd_clear(xp) do { set_pmd(xp, __pmd(0)); } while (0)
@@ -221,7 +221,6 @@ static inline pte_t pte_mkyoung(pte_t pte)
}
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
@@ -206,15 +206,6 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr,
pte_val(*ptep) = _NULL_PTE;
}
-#ifdef NEED_PMD_INDEX_DESPITE_BEING_2_LEVEL
-/**
- * pmd_index - returns the index of the entry in the PMD page
- * which would control the given virtual address
- */
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-
-#endif
-
/**
* pgd_index - returns the index of the entry in the PGD page
* which would control the given virtual address
@@ -389,10 +389,6 @@ pgd_offset (const struct mm_struct *mm, unsigned long address)
((pud_t *) p4d_page_vaddr(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
#endif
-/* Find an entry in the third-level page table.. */
-#define pmd_offset(dir,addr) \
- ((pmd_t *) pud_page_vaddr(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
-
/* atomic versions of the some PTE manipulations: */
static inline int
@@ -211,13 +211,6 @@ static inline pgd_t *pgd_offset_k(unsigned long address)
return kernel_pg_dir + (address >> PGDIR_SHIFT);
}
-
-/* Find an entry in the second-level page table.. */
-static inline pmd_t *pmd_offset(pud_t *dir, unsigned long address)
-{
- return (pmd_t *)pud_page_vaddr(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PMD-1));
-}
-
/* Encode and de-code a swap entry (must be !pte_none(e) && !pte_present(e)) */
#define __swp_type(x) (((x).val >> 4) & 0xff)
#define __swp_offset(x) ((x).val >> 12)
@@ -21,7 +21,6 @@ extern int mem_init_done;
#define pgd_bad(pgd) (0)
#define pgd_clear(pgdp)
#define kern_addr_valid(addr) (1)
-#define pmd_offset(a, b) ((void *) 0)
#define PAGE_NONE __pgprot(0) /* these mean nothing to non MMU */
#define PAGE_SHARED __pgprot(0) /* these mean nothing to non MMU */
@@ -200,7 +200,6 @@ static inline pte_t pfn_pte(unsigned long pfn, pgprot_t prot)
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
@@ -324,7 +324,6 @@ static inline void pud_clear(pud_t *pudp)
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
/* to find an entry in a page-table-directory */
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
@@ -337,11 +336,6 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
#define pud_phys(pud) virt_to_phys((void *)pud_val(pud))
#define pud_page(pud) (pfn_to_page(pud_phys(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);
-}
#endif
/*
@@ -448,14 +448,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
/* Find an entry in the second-level page table.. */
-#if CONFIG_PGTABLE_LEVELS == 3
-#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
-#define pmd_offset(dir,address) \
-((pmd_t *) pud_page_vaddr(*(dir)) + pmd_index(address))
-#else
-#define pmd_offset(dir,addr) ((pmd_t *) dir)
-#endif
-
extern void paging_init (void);
/* Used for deferring calls to flush_dcache_page() */
@@ -201,7 +201,7 @@ static inline void unmap_uncached_pmd(pgd_t * dir, unsigned long vaddr,
pgd_clear(dir);
return;
}
- pmd = pmd_offset(dir, vaddr);
+ pmd = pmd_offset(pud_offset(p4d_offset(dir, vaddr), vaddr), vaddr);
vaddr &= ~PGDIR_MASK;
end = vaddr + size;
if (end > PGDIR_SIZE)
@@ -1010,7 +1010,6 @@ extern struct page *p4d_page(p4d_t p4d);
#define pgd_index(address) (((address) >> (PGDIR_SHIFT)) & (PTRS_PER_PGD - 1))
#define pud_index(address) (((address) >> (PUD_SHIFT)) & (PTRS_PER_PUD - 1))
-#define pmd_index(address) (((address) >> (PMD_SHIFT)) & (PTRS_PER_PMD - 1))
/*
* Find an entry in a page-table-directory. We combine the address region
@@ -1021,8 +1020,6 @@ extern struct page *p4d_page(p4d_t p4d);
#define pud_offset(p4dp, addr) \
(((pud_t *) p4d_page_vaddr(*(p4dp))) + pud_index(addr))
-#define pmd_offset(pudp,addr) \
- (((pmd_t *) pud_page_vaddr(*(pudp))) + pmd_index(addr))
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
@@ -190,9 +190,6 @@ static inline void p4d_set(p4d_t *p4dp, unsigned long val)
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
-#define pmd_offset(pudp,addr) \
- (((pmd_t *) pud_page_vaddr(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
-
/* to find an entry in a kernel page-table-directory */
/* This now only contains the vmalloc pages */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
@@ -70,13 +70,6 @@ static inline struct page *pud_page(pud_t pud)
return pfn_to_page(pud_val(pud) >> _PAGE_PFN_SHIFT);
}
-#define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1))
-
-static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
-{
- return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(addr);
-}
-
static inline pmd_t pfn_pmd(unsigned long pfn, pgprot_t prot)
{
return __pmd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));
@@ -283,21 +283,21 @@ static void __init create_pmd_mapping(pmd_t *pmdp,
{
pte_t *ptep;
phys_addr_t pte_phys;
- uintptr_t pmd_index = pmd_index(va);
+ uintptr_t pmd_idx = pmd_index(va);
if (sz == PMD_SIZE) {
- if (pmd_none(pmdp[pmd_index]))
- pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pa), prot);
+ if (pmd_none(pmdp[pmd_idx]))
+ pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pa), prot);
return;
}
- if (pmd_none(pmdp[pmd_index])) {
+ if (pmd_none(pmdp[pmd_idx])) {
pte_phys = alloc_pte(va);
- pmdp[pmd_index] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE);
+ pmdp[pmd_idx] = pfn_pmd(PFN_DOWN(pte_phys), PAGE_TABLE);
ptep = get_pte_virt(pte_phys);
memset(ptep, 0, PAGE_SIZE);
} else {
- pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_index]));
+ pte_phys = PFN_PHYS(_pmd_pfn(pmdp[pmd_idx]));
ptep = get_pte_virt(pte_phys);
}
@@ -1281,6 +1281,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
return (pmd_t *) pud_deref(*pud) + pmd_index(address);
return (pmd_t *) pud;
}
+#define pmd_offset pmd_offset
static inline unsigned long pmd_page_vaddr(pmd_t pmd)
{
@@ -39,13 +39,6 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
/* only used by the stubbed out hugetlb gup code, should never be called */
#define pud_page(pud) NULL
-
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
-{
- return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
-}
-
#define pud_none(x) (!pud_val(x))
#define pud_present(x) (pud_val(x))
#define pud_clear(xp) do { set_pud(xp, __pud(0)); } while (0)
@@ -416,7 +416,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
#ifdef CONFIG_X2TLB
#define pte_ERROR(e) \
@@ -52,7 +52,6 @@ static __inline__ void set_pte(pte_t *pteptr, pte_t pteval)
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
-/* #define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) */
/*
* PMD level access routines. Same notes as above.
@@ -317,13 +317,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
-/* Find an entry in the second-level page table.. */
-static inline pmd_t *pmd_offset(pud_t * dir, unsigned long address)
-{
- return (pmd_t *) pud_page_vaddr(*dir) +
- ((address >> PMD_SHIFT) & (PTRS_PER_PMD - 1));
-}
-
struct seq_file;
void mmu_info(struct seq_file *m);
@@ -412,7 +405,7 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
}
-#define io_remap_pfn_range io_remap_pfn_range
+#define io_remap_pfn_range io_remap_pfn_range
#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
@@ -901,11 +901,6 @@ static inline unsigned long pud_pfn(pud_t pud)
#define pud_offset(p4dp, address) \
((pud_t *) p4d_page_vaddr(*(p4dp)) + pud_index(address))
-/* Find an entry in the second-level page table.. */
-#define pmd_offset(pudp, address) \
- ((pmd_t *) pud_page_vaddr(*(pudp)) + \
- (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))
-
/* We cannot include <linux/mm_types.h> at this point yet: */
extern struct mm_struct init_mm;
@@ -1070,7 +1065,7 @@ static inline int io_remap_pfn_range(struct vm_area_struct *vma,
return remap_pfn_range(vma, from, phys_base >> PAGE_SHIFT, size, prot);
}
-#define io_remap_pfn_range io_remap_pfn_range
+#define io_remap_pfn_range io_remap_pfn_range
static inline unsigned long __untagged_addr(unsigned long start)
{
@@ -89,10 +89,6 @@ static inline void pud_clear (pud_t *pud)
#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK))
-/* Find an entry in the second-level page table.. */
-#define pmd_offset(pud, address) ((pmd_t *) pud_page_vaddr(*(pud)) + \
- pmd_index(address))
-
static inline unsigned long pte_pfn(pte_t pte)
{
return phys_to_pfn(pte_val(pte));
@@ -318,10 +318,6 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
* control the given virtual address
*/
#define pmd_page_vaddr(pmd) ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
-#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
-
-#define pmd_page_vaddr(pmd) \
- ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK))
struct mm_struct;
extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr);
@@ -835,17 +835,6 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
*/
#define pmd_page(pmd) pfn_to_page(pmd_pfn(pmd))
-/*
- * 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.
@@ -887,12 +876,6 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
*/
#define pud_page(pud) pfn_to_page(pud_pfn(pud))
-/* 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);
-}
-
#define pud_leaf pud_large
static inline int pud_large(pud_t pud)
{
@@ -45,6 +45,7 @@ static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
{
return (pmd_t *)pud;
}
+#define pmd_offset pmd_offset
#define pmd_val(x) (pud_val((x).pud))
#define __pmd(x) ((pmd_t) { __pud(x) } )
@@ -29,16 +29,30 @@
#endif
/*
- * the pte page can be thought of an array like this: pte_t[PTRS_PER_PTE]
+ * A page table page can be thought of an array like this: pXd_t[PTRS_PER_PxD]
*
- * this function returns the index of the entry in the pte page which would
- * control the given virtual address
+ * The pXx_index() functions return the index of the entry in the page
+ * table page which would control the given virtual address
+ *
+ * As these functions may be used by the same code for different levels of
+ * the page table folding, they are always available, regardless of
+ * CONFIG_PGTABLE_LEVELS value. For the folded levels they simply return 0
+ * because in such cases PTRS_PER_PxD equals 1.
*/
+
static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
+#ifndef pmd_index
+static inline unsigned long pmd_index(unsigned long address)
+{
+ return (address >> PMD_SHIFT) & (PTRS_PER_PMD - 1);
+}
+#define pmd_index pmd_index
+#endif
+
#ifndef pte_offset_kernel
static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
{
@@ -57,6 +71,15 @@ static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
#define pte_unmap(pte) ((void)(pte)) /* NOP */
#endif
+/* Find an entry in the second-level page table.. */
+#ifndef pmd_offset
+static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
+{
+ return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
+}
+#define pmd_offset pmd_offset
+#endif
+
/* FIXME: */
static inline pmd_t *pmd_off(struct mm_struct *mm, unsigned long va)
{