1/* SPDX-License-Identifier: GPL-2.0 */ 2#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H 3#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H 4 5#ifndef __ASSEMBLY__ 6#include <linux/types.h> 7 8typedef u64 pteval_t; 9typedef u64 pmdval_t; 10typedef u64 pudval_t; 11typedef u64 p4dval_t; 12typedef u64 pgdval_t; 13typedef u64 pgprotval_t; 14 15typedef union { 16 struct { 17 unsigned long pte_low, pte_high; 18 }; 19 pteval_t pte; 20} pte_t; 21#endif /* !__ASSEMBLY__ */ 22 23#ifdef CONFIG_PARAVIRT 24#define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd) 25#else 26#define SHARED_KERNEL_PMD 1 27#endif 28 29/* 30 * PGDIR_SHIFT determines what a top-level page table entry can map 31 */ 32#define PGDIR_SHIFT 30 33#define PTRS_PER_PGD 4 34 35/* 36 * PMD_SHIFT determines the size of the area a middle-level 37 * page table can map 38 */ 39#define PMD_SHIFT 21 40#define PTRS_PER_PMD 512 41 42/* 43 * entries per page directory level 44 */ 45#define PTRS_PER_PTE 512 46 47#define MAX_POSSIBLE_PHYSMEM_BITS 36 48 49#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */ 50