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- #ifndef _X86_64_PAGE_H
- #define _X86_64_PAGE_H
- #ifdef __KERNEL__
- #ifndef __ASSEMBLY__
- extern unsigned long end_pfn;
- extern unsigned long end_pfn_map;
- extern unsigned long phys_base;
- #endif /* !__ASSEMBLY__ */
- #ifndef __ASSEMBLY__
- #include <asm/bug.h>
- extern unsigned long __phys_addr(unsigned long);
- #endif /* __ASSEMBLY__ */
- #define __pa(x) __phys_addr((unsigned long)(x))
- #define __pa_symbol(x) __phys_addr((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 virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
- #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
- #define __HAVE_ARCH_GATE_AREA 1
- #define vmemmap ((struct page *)VMEMMAP_START)
- #include <asm-generic/memory_model.h>
- #include <asm-generic/page.h>
- #endif /* __KERNEL__ */
- #ifdef CONFIG_FLATMEM
- #define pfn_valid(pfn) ((pfn) < end_pfn)
- #endif
- #endif /* _X86_64_PAGE_H */
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