345b904c3f
# HG changeset patch # User Jeremy Fitzhardinge <jeremy@xensource.com> # Date 1199317362 28800 # Node ID 4d9a413a0f4c1d98dbea704f0366457b5117045d # Parent ba0ec40a50a7aef1a3153cea124c35e261f5a2df x86: page.h: unify page copying and clearing Move, and to some extent unify, the various page copying and clearing functions. The only unification here is that both architectures use the same function for copying/clearing user and kernel pages. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
#ifndef _X86_64_PAGE_H
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#define _X86_64_PAGE_H
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#ifdef __KERNEL__
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#ifndef __ASSEMBLY__
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extern unsigned long end_pfn;
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extern unsigned long end_pfn_map;
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/*
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* These are used to make use of C type-checking..
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*/
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typedef struct { unsigned long pte; } pte_t;
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typedef struct { unsigned long pmd; } pmd_t;
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typedef struct { unsigned long pud; } pud_t;
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typedef struct { unsigned long pgd; } pgd_t;
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#define PTE_MASK PHYSICAL_PAGE_MASK
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typedef struct { unsigned long pgprot; } pgprot_t;
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extern unsigned long phys_base;
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#define pte_val(x) ((x).pte)
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#define pmd_val(x) ((x).pmd)
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#define pud_val(x) ((x).pud)
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#define pgd_val(x) ((x).pgd)
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#define pgprot_val(x) ((x).pgprot)
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#define __pte(x) ((pte_t) { (x) } )
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#define __pmd(x) ((pmd_t) { (x) } )
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#define __pud(x) ((pud_t) { (x) } )
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#define __pgd(x) ((pgd_t) { (x) } )
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#define __pgprot(x) ((pgprot_t) { (x) } )
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#endif /* !__ASSEMBLY__ */
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#ifndef __ASSEMBLY__
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#include <asm/bug.h>
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extern unsigned long __phys_addr(unsigned long);
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#endif /* __ASSEMBLY__ */
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#define __pa(x) __phys_addr((unsigned long)(x))
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#define __pa_symbol(x) __phys_addr((unsigned long)(x))
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#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
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#define __boot_va(x) __va(x)
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#define __boot_pa(x) __pa(x)
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#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
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#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
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#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
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#define __HAVE_ARCH_GATE_AREA 1
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#define vmemmap ((struct page *)VMEMMAP_START)
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#include <asm-generic/memory_model.h>
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#include <asm-generic/page.h>
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#endif /* __KERNEL__ */
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#ifdef CONFIG_FLATMEM
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#define pfn_valid(pfn) ((pfn) < end_pfn)
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#endif
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#endif /* _X86_64_PAGE_H */
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