#ifndef _I386_PAGE_H
#define _I386_PAGE_H

#ifdef __KERNEL__
#ifndef __ASSEMBLY__

/*
 * These are used to make use of C type-checking..
 */
extern int nx_enabled;

#endif /* !__ASSEMBLY__ */

#ifndef __ASSEMBLY__

struct vm_area_struct;

/*
 * This much address space is reserved for vmalloc() and iomap()
 * as well as fixmap mappings.
 */
extern unsigned int __VMALLOC_RESERVE;

extern int sysctl_legacy_va_layout;

extern int page_is_ram(unsigned long pagenr);

#endif /* __ASSEMBLY__ */

#define VMALLOC_RESERVE		((unsigned long)__VMALLOC_RESERVE)
#define MAXMEM			(-__PAGE_OFFSET-__VMALLOC_RESERVE)
#define __pa(x)			((unsigned long)(x)-PAGE_OFFSET)
/* __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(RELOC_HIDE((unsigned long)(x),0))
#define __va(x)			((void *)((unsigned long)(x)+PAGE_OFFSET))
#define pfn_to_kaddr(pfn)      __va((pfn) << PAGE_SHIFT)
#ifdef CONFIG_FLATMEM
#define pfn_valid(pfn)		((pfn) < max_mapnr)
#endif /* CONFIG_FLATMEM */
#define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)

#define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)

#include <asm-generic/memory_model.h>
#include <asm-generic/page.h>

#define __HAVE_ARCH_GATE_AREA 1
#endif /* __KERNEL__ */

#endif /* _I386_PAGE_H */