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#ifndef _ASM_X86_PAGE_H
#define _ASM_X86_PAGE_H
#ifdef __KERNEL__
#include <asm/page_types.h>
#ifdef CONFIG_X86_64
#include <asm/page_64.h>
#else
#include <asm/page_32.h>
#endif /* CONFIG_X86_64 */
#ifndef __ASSEMBLY__
struct page;
static inline void clear_user_page(void *page, unsigned long vaddr,
struct page *pg)
{
clear_page(page);
}
static inline void 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
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;
}
static inline pgdval_t pgd_flags(pgd_t pgd)
{
return native_pgd_val(pgd) & PTE_FLAGS_MASK;
}
#if PAGETABLE_LEVELS >= 3
#if PAGETABLE_LEVELS == 4
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 */
static inline pudval_t native_pud_val(pud_t pud)
{
return native_pgd_val(pud.pgd);
}
#endif /* PAGETABLE_LEVELS == 4 */
static inline pudval_t pud_flags(pud_t pud)
{
return native_pud_val(pud) & PTE_FLAGS_MASK;
}
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 */
static inline pmdval_t native_pmd_val(pmd_t pmd)
{
return native_pgd_val(pmd.pud.pgd);
}
#endif /* PAGETABLE_LEVELS >= 3 */
static inline pmdval_t pmd_flags(pmd_t pmd)
{
return native_pmd_val(pmd) & PTE_FLAGS_MASK;
}
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;
}
static inline pteval_t pte_flags(pte_t pte)
{
return native_pte_val(pte) & PTE_FLAGS_MASK;
}
#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))
#define __pa_nodebug(x) __phys_addr_nodebug((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)
/*
* virt_to_page(kaddr) returns a valid pointer if and only if
* virt_addr_valid(kaddr) returns true.
*/
#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
extern bool __virt_addr_valid(unsigned long kaddr);
#define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr))
#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 */
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