[PATCH 1/2][RFC] Shared page tables: standardize macros

From: Dave McCracken
Date: Wed May 03 2006 - 11:43:40 EST

This patch makes the pxd_page/pxd_page_kernel macros consistent
across layers for all architectures. It is needed for shared
page tables.

Signed-off-by: Dave McCracken <dmccr@.us.ibm.com>

---
arch/sparc/mm/srmmu.c | 2 +-
arch/sparc/mm/sun4c.c | 2 +-
arch/x86_64/mm/fault.c | 4 ++--
include/asm-alpha/mmzone.h | 1 +
include/asm-alpha/pgtable.h | 5 +++--
include/asm-generic/4level-fixup.h | 4 ++++
include/asm-ia64/pgtable.h | 10 ++++++----
include/asm-m32r/pgtable-2level.h | 6 +++++-
include/asm-m68k/motorola_pgtable.h | 1 +
include/asm-mips/pgtable-64.h | 6 ++++--
include/asm-parisc/pgtable.h | 5 +++--
include/asm-powerpc/pgtable-4k.h | 5 +++--
include/asm-powerpc/pgtable.h | 5 +++--
include/asm-ppc/pgtable.h | 2 +-
include/asm-s390/pgtable.h | 2 ++
include/asm-sh/pgtable-2level.h | 5 ++++-
include/asm-sh64/pgtable.h | 4 +++-
include/asm-sparc/pgtable.h | 4 ++--
include/asm-sparc64/pgtable.h | 5 +++--
include/asm-um/pgtable-3level.h | 5 +++--
include/asm-x86_64/pgtable.h | 12 ++++++------
21 files changed, 61 insertions(+), 34 deletions(-)

--- 2.6.17-rc3/./arch/sparc/mm/srmmu.c 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./arch/sparc/mm/srmmu.c 2006-04-28 10:49:17.000000000 -0500
@@ -2176,7 +2176,7 @@ void __init ld_mmu_srmmu(void)

BTFIXUPSET_CALL(pte_pfn, srmmu_pte_pfn, BTFIXUPCALL_NORM);
BTFIXUPSET_CALL(pmd_page, srmmu_pmd_page, BTFIXUPCALL_NORM);
- BTFIXUPSET_CALL(pgd_page, srmmu_pgd_page, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(pgd_page_kernel, srmmu_pgd_page, BTFIXUPCALL_NORM);

BTFIXUPSET_SETHI(none_mask, 0xF0000000);

--- 2.6.17-rc3/./arch/sparc/mm/sun4c.c 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./arch/sparc/mm/sun4c.c 2006-04-28 10:49:17.000000000 -0500
@@ -2281,5 +2281,5 @@ void __init ld_mmu_sun4c(void)

/* These should _never_ get called with two level tables. */
BTFIXUPSET_CALL(pgd_set, sun4c_pgd_set, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(pgd_page, sun4c_pgd_page, BTFIXUPCALL_RETO0);
+ BTFIXUPSET_CALL(pgd_page_kernel, sun4c_pgd_page, BTFIXUPCALL_RETO0);
}
--- 2.6.17-rc3/./arch/x86_64/mm/fault.c 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./arch/x86_64/mm/fault.c 2006-04-28 10:49:17.000000000 -0500
@@ -160,7 +160,7 @@ void dump_pagetable(unsigned long addres
printk("PGD %lx ", pgd_val(*pgd));
if (!pgd_present(*pgd)) goto ret;

- pud = __pud_offset_k((pud_t *)pgd_page(*pgd), address);
+ pud = __pud_offset_k((pud_t *)pgd_page_kernel(*pgd), address);
if (bad_address(pud)) goto bad;
printk("PUD %lx ", pud_val(*pud));
if (!pud_present(*pud)) goto ret;
@@ -274,7 +274,7 @@ static int vmalloc_fault(unsigned long a
pud_ref = pud_offset(pgd_ref, address);
if (pud_none(*pud_ref))
return -1;
- if (pud_none(*pud) || pud_page(*pud) != pud_page(*pud_ref))
+ if (pud_none(*pud) || pud_page_kernel(*pud) != pud_page_kernel(*pud_ref))
BUG();
pmd = pmd_offset(pud, address);
pmd_ref = pmd_offset(pud_ref, address);
--- 2.6.17-rc3/./include/asm-alpha/mmzone.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-alpha/mmzone.h 2006-04-28 10:49:17.000000000 -0500
@@ -76,6 +76,7 @@ PLAT_NODE_DATA_LOCALNR(unsigned long p,
#define VALID_PAGE(page) (((page) - mem_map) < max_mapnr)

#define pmd_page(pmd) (pfn_to_page(pmd_val(pmd) >> 32))
+#define pgd_page(pgd) (pfn_to_page(pgd_val(pgd) >> 32))
#define pte_pfn(pte) (pte_val(pte) >> 32)

#define mk_pte(page, pgprot) \
--- 2.6.17-rc3/./include/asm-alpha/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-alpha/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -238,9 +238,10 @@ pmd_page_kernel(pmd_t pmd)

#ifndef CONFIG_DISCONTIGMEM
#define pmd_page(pmd) (mem_map + ((pmd_val(pmd) & _PFN_MASK) >> 32))
+#define pgd_page(pgd) (mem_map + ((pgd_val(pgd) & _PFN_MASK) >> 32))
#endif

-extern inline unsigned long pgd_page(pgd_t pgd)
+extern inline unsigned long pgd_page_kernel(pgd_t pgd)
{ return PAGE_OFFSET + ((pgd_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)); }

extern inline int pte_none(pte_t pte) { return !pte_val(pte); }
@@ -294,7 +295,7 @@ extern inline pte_t pte_mkyoung(pte_t pt
/* Find an entry in the second-level page table.. */
extern inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
{
- return (pmd_t *) pgd_page(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
+ return (pmd_t *) pgd_page_kernel(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
}

/* Find an entry in the third-level page table.. */
--- 2.6.17-rc3/./include/asm-generic/4level-fixup.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-generic/4level-fixup.h 2006-04-28 10:49:17.000000000 -0500
@@ -21,6 +21,10 @@
#define pud_present(pud) 1
#define pud_ERROR(pud) do { } while (0)
#define pud_clear(pud) pgd_clear(pud)
+#define pud_val(pud) pgd_val(pud)
+#define pud_populate(mm, pud, pmd) pgd_populate(mm, pud, pmd)
+#define pud_page(pud) pgd_page(pud)
+#define pud_page_kernel(pud) pgd_page_kernel(pud)

#undef pud_free_tlb
#define pud_free_tlb(tlb, x) do { } while (0)
--- 2.6.17-rc3/./include/asm-ia64/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-ia64/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -283,14 +283,16 @@ ia64_phys_addr_valid (unsigned long addr
#define pud_bad(pud) (!ia64_phys_addr_valid(pud_val(pud)))
#define pud_present(pud) (pud_val(pud) != 0UL)
#define pud_clear(pudp) (pud_val(*(pudp)) = 0UL)
-#define pud_page(pud) ((unsigned long) __va(pud_val(pud) & _PFN_MASK))
+#define pud_page_kernel(pud) ((unsigned long) __va(pud_val(pud) & _PFN_MASK))
+#define pud_page(pud) virt_to_page((pud_val(pud) + PAGE_OFFSET))

#ifdef CONFIG_PGTABLE_4
#define pgd_none(pgd) (!pgd_val(pgd))
#define pgd_bad(pgd) (!ia64_phys_addr_valid(pgd_val(pgd)))
#define pgd_present(pgd) (pgd_val(pgd) != 0UL)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0UL)
-#define pgd_page(pgd) ((unsigned long) __va(pgd_val(pgd) & _PFN_MASK))
+#define pgd_page_kernel(pgd) ((unsigned long) __va(pgd_val(pgd) & _PFN_MASK))
+#define pgd_page(pgd) virt_to_page((pgd_val(pgd) + PAGE_OFFSET))
#endif

/*
@@ -363,12 +365,12 @@ pgd_offset (struct mm_struct *mm, unsign
#ifdef CONFIG_PGTABLE_4
/* Find an entry in the second-level page table.. */
#define pud_offset(dir,addr) \
- ((pud_t *) pgd_page(*(dir)) + (((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))
+ ((pud_t *) pgd_page_kernel(*(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(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
+ ((pmd_t *) pud_page_kernel(*(dir)) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))

/*
* Find an entry in the third-level page table. This looks more complicated than it
--- 2.6.17-rc3/./include/asm-m32r/pgtable-2level.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-m32r/pgtable-2level.h 2006-04-28 10:49:17.000000000 -0500
@@ -53,9 +53,13 @@ static inline int pgd_present(pgd_t pgd)
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)

-#define pgd_page(pgd) \
+#define pgd_page_kernel(pgd) \
((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))

+#ifndef CONFIG_DISCONTIGMEM
+#define pgd_page(pgd) (mem_map + ((pgd_val(pgd) >> PAGE_SHIFT) - PFN_BASE))
+#endif /* !CONFIG_DISCONTIGMEM */
+
static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
{
return (pmd_t *) dir;
--- 2.6.17-rc3/./include/asm-m68k/motorola_pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-m68k/motorola_pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -151,6 +151,7 @@ static inline void pgd_set(pgd_t *pgdp,
#define pgd_bad(pgd) ((pgd_val(pgd) & _DESCTYPE_MASK) != _PAGE_TABLE)
#define pgd_present(pgd) (pgd_val(pgd) & _PAGE_TABLE)
#define pgd_clear(pgdp) ({ pgd_val(*pgdp) = 0; })
+#define pgd_page(pgd) (mem_map + ((unsigned long)(__va(pgd_val(pgd)) - PAGE_OFFSET) >> PAGE_SHIFT))

#define pte_ERROR(e) \
printk("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
--- 2.6.17-rc3/./include/asm-mips/pgtable-64.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-mips/pgtable-64.h 2006-04-28 10:49:17.000000000 -0500
@@ -179,15 +179,17 @@ static inline void pud_clear(pud_t *pudp
/* to find an entry in a page-table-directory */
#define pgd_offset(mm,addr) ((mm)->pgd + pgd_index(addr))

-static inline unsigned long pud_page(pud_t pud)
+static inline unsigned long pud_page_kernel(pud_t pud)
{
return pud_val(pud);
}
+#define pud_phys(pud) (pud_val(pud) - PAGE_OFFSET)
+#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(*pud) + pmd_index(address);
+ return (pmd_t *) pud_page_kernel(*pud) + pmd_index(address);
}

/* Find an entry in the third-level page table.. */
--- 2.6.17-rc3/./include/asm-parisc/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-parisc/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -304,7 +304,8 @@ static inline void pmd_clear(pmd_t *pmd)


#if PT_NLEVELS == 3
-#define pgd_page(pgd) ((unsigned long) __va(pgd_address(pgd)))
+#define pgd_page_kernel(pgd) ((unsigned long) __va(pgd_address(pgd)))
+#define pgd_page(pgd) virt_to_page((void *)pgd_page_kernel(pgd))

/* For 64 bit we have three level tables */

@@ -401,7 +402,7 @@ extern inline pte_t pte_modify(pte_t pte

#if PT_NLEVELS == 3
#define pmd_offset(dir,address) \
-((pmd_t *) pgd_page(*(dir)) + (((address)>>PMD_SHIFT) & (PTRS_PER_PMD-1)))
+((pmd_t *) pgd_page_kernel(*(dir)) + (((address)>>PMD_SHIFT) & (PTRS_PER_PMD-1)))
#else
#define pmd_offset(dir,addr) ((pmd_t *) dir)
#endif
--- 2.6.17-rc3/./include/asm-powerpc/pgtable-4k.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-powerpc/pgtable-4k.h 2006-04-28 10:49:17.000000000 -0500
@@ -86,10 +86,11 @@
#define pgd_bad(pgd) (pgd_val(pgd) == 0)
#define pgd_present(pgd) (pgd_val(pgd) != 0)
#define pgd_clear(pgdp) (pgd_val(*(pgdp)) = 0)
-#define pgd_page(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS)
+#define pgd_page_kernel(pgd) (pgd_val(pgd) & ~PGD_MASKED_BITS)
+#define pgd_page(pgd) virt_to_page(pgd_page_kernel(pgd))

#define pud_offset(pgdp, addr) \
- (((pud_t *) pgd_page(*(pgdp))) + \
+ (((pud_t *) pgd_page_kernel(*(pgdp))) + \
(((addr) >> PUD_SHIFT) & (PTRS_PER_PUD - 1)))

#define pud_ERROR(e) \
--- 2.6.17-rc3/./include/asm-powerpc/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-powerpc/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -206,7 +206,8 @@ static inline pte_t pfn_pte(unsigned lon
|| (pud_val(pud) & PUD_BAD_BITS))
#define pud_present(pud) (pud_val(pud) != 0)
#define pud_clear(pudp) (pud_val(*(pudp)) = 0)
-#define pud_page(pud) (pud_val(pud) & ~PUD_MASKED_BITS)
+#define pud_page_kernel(pud) (pud_val(pud) & ~PUD_MASKED_BITS)
+#define pud_page(pud) virt_to_page(pud_page_kernel(pud))

#define pgd_set(pgdp, pudp) ({pgd_val(*(pgdp)) = (unsigned long)(pudp);})

@@ -220,7 +221,7 @@ static inline pte_t pfn_pte(unsigned lon
#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))

#define pmd_offset(pudp,addr) \
- (((pmd_t *) pud_page(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))
+ (((pmd_t *) pud_page_kernel(*(pudp))) + (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)))

#define pte_offset_kernel(dir,addr) \
(((pte_t *) pmd_page_kernel(*(dir))) + (((addr) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)))
--- 2.6.17-rc3/./include/asm-ppc/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-ppc/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -527,7 +527,7 @@ static inline int pgd_bad(pgd_t pgd) {
static inline int pgd_present(pgd_t pgd) { return 1; }
#define pgd_clear(xp) do { } while (0)

-#define pgd_page(pgd) \
+#define pgd_page_kernel(pgd) \
((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))

/*
--- 2.6.17-rc3/./include/asm-s390/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-s390/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -685,6 +685,8 @@ static inline pte_t mk_pte_phys(unsigned

#define pgd_page_kernel(pgd) (pgd_val(pgd) & PAGE_MASK)

+#define pgd_page(pgd) (mem_map+(pgd_val(pgd) >> PAGE_SHIFT))
+
/* to find an entry in a page-table-directory */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
--- 2.6.17-rc3/./include/asm-sh/pgtable-2level.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-sh/pgtable-2level.h 2006-04-28 10:49:17.000000000 -0500
@@ -50,9 +50,12 @@ static inline void pgd_clear (pgd_t * pg
#define set_pmd(pmdptr, pmdval) (*(pmdptr) = pmdval)
#define set_pgd(pgdptr, pgdval) (*(pgdptr) = pgdval)

-#define pgd_page(pgd) \
+#define pgd_page_kernel(pgd) \
((unsigned long) __va(pgd_val(pgd) & PAGE_MASK))

+#define pgd_page(pgd) \
+ (phys_to_page(pgd_val(pgd)))
+
static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address)
{
return (pmd_t *) dir;
--- 2.6.17-rc3/./include/asm-sh64/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-sh64/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -191,7 +191,9 @@ static inline int pgd_bad(pgd_t pgd) {
#endif


-#define pgd_page(pgd_entry) ((unsigned long) (pgd_val(pgd_entry) & PAGE_MASK))
+#define pgd_page_kernel(pgd_entry) ((unsigned long) (pgd_val(pgd_entry) & PAGE_MASK))
+#define pgd_page(pgd) (virt_to_page(pgd_val(pgd)))
+

/*
* PMD defines. Middle level.
--- 2.6.17-rc3/./include/asm-sparc/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-sparc/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -144,10 +144,10 @@ extern unsigned long empty_zero_page;
/*
*/
BTFIXUPDEF_CALL_CONST(struct page *, pmd_page, pmd_t)
-BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page, pgd_t)
+BTFIXUPDEF_CALL_CONST(unsigned long, pgd_page_kernel, pgd_t)

#define pmd_page(pmd) BTFIXUP_CALL(pmd_page)(pmd)
-#define pgd_page(pgd) BTFIXUP_CALL(pgd_page)(pgd)
+#define pgd_page_kernel(pgd) BTFIXUP_CALL(pgd_page_kernel)(pgd)

BTFIXUPDEF_SETHI(none_mask)
BTFIXUPDEF_CALL_CONST(int, pte_present, pte_t)
--- 2.6.17-rc3/./include/asm-sparc64/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-sparc64/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -631,8 +631,9 @@ static inline unsigned long pte_present(
#define __pmd_page(pmd) \
((unsigned long) __va((((unsigned long)pmd_val(pmd))<<11UL)))
#define pmd_page(pmd) virt_to_page((void *)__pmd_page(pmd))
-#define pud_page(pud) \
+#define pud_page_kernel(pud) \
((unsigned long) __va((((unsigned long)pud_val(pud))<<11UL)))
+#define pud_page(pud) virt_to_page((void *)pud_page_kernel(pud))
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_bad(pmd) (0)
#define pmd_present(pmd) (pmd_val(pmd) != 0U)
@@ -654,7 +655,7 @@ static inline unsigned long pte_present(

/* Find an entry in the second-level page table.. */
#define pmd_offset(pudp, address) \
- ((pmd_t *) pud_page(*(pudp)) + \
+ ((pmd_t *) pud_page_kernel(*(pudp)) + \
(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)))

/* Find an entry in the third-level page table.. */
--- 2.6.17-rc3/./include/asm-um/pgtable-3level.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-um/pgtable-3level.h 2006-04-28 10:49:17.000000000 -0500
@@ -74,11 +74,12 @@ extern inline void pud_clear (pud_t *pud
set_pud(pud, __pud(0));
}

-#define pud_page(pud) \
+#define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
+#define pud_page_kernel(pud) \
((struct page *) __va(pud_val(pud) & PAGE_MASK))

/* Find an entry in the second-level page table.. */
-#define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \
+#define pmd_offset(pud, address) ((pmd_t *) pud_page_kernel(*(pud)) + \
pmd_index(address))

static inline unsigned long pte_pfn(pte_t pte)
--- 2.6.17-rc3/./include/asm-x86_64/pgtable.h 2006-04-26 21:19:25.000000000 -0500
+++ 2.6.17-rc3-macro/./include/asm-x86_64/pgtable.h 2006-04-28 10:49:17.000000000 -0500
@@ -101,9 +101,6 @@ static inline void pgd_clear (pgd_t * pg
set_pgd(pgd, __pgd(0));
}

-#define pud_page(pud) \
-((unsigned long) __va(pud_val(pud) & PHYSICAL_PAGE_MASK))
-
#define ptep_get_and_clear(mm,addr,xp) __pte(xchg(&(xp)->pte, 0))

struct mm_struct;
@@ -326,7 +323,8 @@ static inline int pmd_large(pmd_t pte) {
/*
* Level 4 access.
*/
-#define pgd_page(pgd) ((unsigned long) __va((unsigned long)pgd_val(pgd) & PTE_MASK))
+#define pgd_page_kernel(pgd) ((unsigned long) __va((unsigned long)pgd_val(pgd) & PTE_MASK))
+#define pgd_page(pgd) (pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT))
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
#define pgd_offset(mm, addr) ((mm)->pgd + pgd_index(addr))
#define pgd_offset_k(address) (init_level4_pgt + pgd_index(address))
@@ -335,8 +333,10 @@ static inline int pmd_large(pmd_t pte) {

/* PUD - Level3 access */
/* to find an entry in a page-table-directory. */
+#define pud_page_kernel(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(*(pgd)) + pud_index(address))
+#define pud_offset(pgd, address) ((pud_t *) pgd_page_kernel(*(pgd)) + pud_index(address))
#define pud_offset_k(pgd, addr) pud_offset(pgd, addr)
#define pud_present(pud) (pud_val(pud) & _PAGE_PRESENT)

@@ -350,7 +350,7 @@ static inline pud_t *__pud_offset_k(pud_
#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(*(dir)) + \
+#define pmd_offset(dir, address) ((pmd_t *) pud_page_kernel(*(dir)) + \
pmd_index(address))
#define pmd_none(x) (!pmd_val(x))
#define pmd_present(x) (pmd_val(x) & _PAGE_PRESENT)


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/