1#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H 2#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H 3 4#ifndef __ASSEMBLY__ 5#include <linux/types.h> 6 7typedef u64 pteval_t; 8typedef u64 pmdval_t; 9typedef u64 pudval_t; 10typedef u64 p4dval_t; 11typedef u64 pgdval_t; 12typedef u64 pgprotval_t; 13 14typedef union { 15 struct { 16 unsigned long pte_low, pte_high; 17 }; 18 pteval_t pte; 19} pte_t; 20#endif /* !__ASSEMBLY__ */ 21 22#ifdef CONFIG_PARAVIRT 23#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd) 24#else 25#define SHARED_KERNEL_PMD 1 26#endif 27 28/* 29 * PGDIR_SHIFT determines what a top-level page table entry can map 30 */ 31#define PGDIR_SHIFT 30 32#define PTRS_PER_PGD 4 33 34/* 35 * PMD_SHIFT determines the size of the area a middle-level 36 * page table can map 37 */ 38#define PMD_SHIFT 21 39#define PTRS_PER_PMD 512 40 41/* 42 * entries per page directory level 43 */ 44#define PTRS_PER_PTE 512 45 46 47#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */ 48