1 #ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H 2 #define _ASM_X86_PGTABLE_3LEVEL_DEFS_H 3 4 #ifdef CONFIG_PARAVIRT 5 #define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd) 6 #else 7 #define SHARED_KERNEL_PMD 1 8 #endif 9 10 /* 11 * PGDIR_SHIFT determines what a top-level page table entry can map 12 */ 13 #define PGDIR_SHIFT 30 14 #define PTRS_PER_PGD 4 15 16 /* 17 * PMD_SHIFT determines the size of the area a middle-level 18 * page table can map 19 */ 20 #define PMD_SHIFT 21 21 #define PTRS_PER_PMD 512 22 23 /* 24 * entries per page directory level 25 */ 26 #define PTRS_PER_PTE 512 27 28 #endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */ 29