| #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 */ |