| #ifndef _ASM_X86_PAGE_DEFS_H |
| #define _ASM_X86_PAGE_DEFS_H |
| |
| #include <linux/const.h> |
| #include <linux/types.h> |
| |
| /* PAGE_SHIFT determines the page size */ |
| #define PAGE_SHIFT 12 |
| #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) |
| #define PAGE_MASK (~(PAGE_SIZE-1)) |
| |
| #define __PHYSICAL_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1)) |
| #define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1) |
| |
| /* Cast PAGE_MASK to a signed type so that it is sign-extended if |
| virtual addresses are 32-bits but physical addresses are larger |
| (ie, 32-bit PAE). */ |
| #define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK) |
| |
| #define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT) |
| #define PMD_PAGE_MASK (~(PMD_PAGE_SIZE-1)) |
| |
| #define HPAGE_SHIFT PMD_SHIFT |
| #define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT) |
| #define HPAGE_MASK (~(HPAGE_SIZE - 1)) |
| #define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) |
| |
| #define HUGE_MAX_HSTATE 2 |
| |
| #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) |
| |
| #define VM_DATA_DEFAULT_FLAGS \ |
| (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ |
| VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) |
| |
| #ifdef CONFIG_X86_64 |
| #include <asm/page_64_types.h> |
| #else |
| #include <asm/page_32_types.h> |
| #endif /* CONFIG_X86_64 */ |
| |
| #ifndef __ASSEMBLY__ |
| |
| extern int devmem_is_allowed(unsigned long pagenr); |
| |
| extern unsigned long max_low_pfn_mapped; |
| extern unsigned long max_pfn_mapped; |
| |
| static inline phys_addr_t get_max_mapped(void) |
| { |
| return (phys_addr_t)max_pfn_mapped << PAGE_SHIFT; |
| } |
| |
| extern unsigned long init_memory_mapping(unsigned long start, |
| unsigned long end); |
| |
| extern void initmem_init(void); |
| extern void free_initmem(void); |
| |
| #endif /* !__ASSEMBLY__ */ |
| |
| #endif /* _ASM_X86_PAGE_DEFS_H */ |