1 files changed, 180 insertions, 10 deletions

diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h
index a757eb26141d..1cb7c51bc296 100644
--- a/include/asm-x86/page.h
+++ b/include/asm-x86/page.h
@@ -1,13 +1,183 @@
+#ifndef _ASM_X86_PAGE_H
+#define _ASM_X86_PAGE_H
+
+#include <linux/const.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT      12
+#define PAGE_SIZE       (_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK       (~(PAGE_SIZE-1))
+
 #ifdef __KERNEL__
-# ifdef CONFIG_X86_32
-#  include "page_32.h"
-# else
-#  include "page_64.h"
-# endif
+
+#define PHYSICAL_PAGE_MASK      (PAGE_MASK & __PHYSICAL_MASK)
+#define PTE_MASK                (_AT(long, PHYSICAL_PAGE_MASK))
+
+#define PMD_PAGE_SIZE           (_AC(1, UL) << PMD_SHIFT)
+#define PMD_PAGE_MASK           (~(PMD_PAGE_SIZE-1))
+
+#define HPAGE_SHIFT             PMD_SHIFT
+#define HPAGE_SIZE              (_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK              (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER      (HPAGE_SHIFT - PAGE_SHIFT)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr)        (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+#define __PHYSICAL_MASK         _AT(phys_addr_t, (_AC(1,ULL) << __PHYSICAL_MASK_SHIFT) - 1)
+#define __VIRTUAL_MASK          ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1)
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+#endif
+
+#ifdef CONFIG_X86_64
+#include <asm/page_64.h>
+#define max_pfn_mapped          end_pfn_map
 #else
-# ifdef __i386__
-#  include "page_32.h"
-# else
-#  include "page_64.h"
-# endif
+#include <asm/page_32.h>
+#define max_pfn_mapped          max_low_pfn
+#endif  /* CONFIG_X86_64 */
+
+#define PAGE_OFFSET             ((unsigned long)__PAGE_OFFSET)
+
+#define VM_DATA_DEFAULT_FLAGS \
+        (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+         VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+
+#ifndef __ASSEMBLY__
+
+extern int page_is_ram(unsigned long pagenr);
+
+struct page;
+
+static void inline clear_user_page(void *page, unsigned long vaddr,
+                                struct page *pg)
+{
+        clear_page(page);
+}
+
+static void inline copy_user_page(void *to, void *from, unsigned long vaddr,
+                                struct page *topage)
+{
+        copy_page(to, from);
+}
+
+#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
+        alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
+typedef struct { pgdval_t pgd; } pgd_t;
+typedef struct { pgprotval_t pgprot; } pgprot_t;
+
+static inline pgd_t native_make_pgd(pgdval_t val)
+{
+        return (pgd_t) { val };
+}
+
+static inline pgdval_t native_pgd_val(pgd_t pgd)
+{
+        return pgd.pgd;
+}
+
+#if PAGETABLE_LEVELS >= 3
+#if PAGETABLE_LEVELS == 4
+typedef struct { pudval_t pud; } pud_t;
+
+static inline pud_t native_make_pud(pmdval_t val)
+{
+        return (pud_t) { val };
+}
+
+static inline pudval_t native_pud_val(pud_t pud)
+{
+        return pud.pud;
+}
+#else   /* PAGETABLE_LEVELS == 3 */
+#include <asm-generic/pgtable-nopud.h>
+
+static inline pudval_t native_pud_val(pud_t pud)
+{
+        return native_pgd_val(pud.pgd);
+}
+#endif  /* PAGETABLE_LEVELS == 4 */
+
+typedef struct { pmdval_t pmd; } pmd_t;
+
+static inline pmd_t native_make_pmd(pmdval_t val)
+{
+        return (pmd_t) { val };
+}
+
+static inline pmdval_t native_pmd_val(pmd_t pmd)
+{
+        return pmd.pmd;
+}
+#else  /* PAGETABLE_LEVELS == 2 */
+#include <asm-generic/pgtable-nopmd.h>
+
+static inline pmdval_t native_pmd_val(pmd_t pmd)
+{
+        return native_pgd_val(pmd.pud.pgd);
+}
+#endif  /* PAGETABLE_LEVELS >= 3 */
+
+static inline pte_t native_make_pte(pteval_t val)
+{
+        return (pte_t) { .pte = val };
+}
+
+static inline pteval_t native_pte_val(pte_t pte)
+{
+        return pte.pte;
+}
+
+#define pgprot_val(x)   ((x).pgprot)
+#define __pgprot(x)     ((pgprot_t) { (x) } )
+
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else  /* !CONFIG_PARAVIRT */
+
+#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)
+
+#endif  /* CONFIG_PARAVIRT */
+
+#define __pa(x)         __phys_addr((unsigned long)(x))
+/* __pa_symbol should be used for C visible symbols.
+   This seems to be the official gcc blessed way to do such arithmetic. */
+#define __pa_symbol(x)  __pa(__phys_reloc_hide((unsigned long)(x)))
+
+#define __va(x)                 ((void *)((unsigned long)(x)+PAGE_OFFSET))
+
+#define __boot_va(x)            __va(x)
+#define __boot_pa(x)            __pa(x)
+
+#define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
+#define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+
+#endif  /* __ASSEMBLY__ */
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
+#define __HAVE_ARCH_GATE_AREA 1
+
+#endif  /* __KERNEL__ */
+#endif  /* _ASM_X86_PAGE_H */