1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 2b924a281SJeremy Fitzhardinge #ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H 3b924a281SJeremy Fitzhardinge #define _ASM_X86_PGTABLE_3LEVEL_DEFS_H 4b924a281SJeremy Fitzhardinge 554321d94SJeremy Fitzhardinge #ifndef __ASSEMBLY__ 654321d94SJeremy Fitzhardinge #include <linux/types.h> 754321d94SJeremy Fitzhardinge 854321d94SJeremy Fitzhardinge typedef u64 pteval_t; 954321d94SJeremy Fitzhardinge typedef u64 pmdval_t; 1054321d94SJeremy Fitzhardinge typedef u64 pudval_t; 11fe1e8c3eSKirill A. Shutemov typedef u64 p4dval_t; 1254321d94SJeremy Fitzhardinge typedef u64 pgdval_t; 1354321d94SJeremy Fitzhardinge typedef u64 pgprotval_t; 1454321d94SJeremy Fitzhardinge 1554321d94SJeremy Fitzhardinge typedef union { 1654321d94SJeremy Fitzhardinge struct { 1754321d94SJeremy Fitzhardinge unsigned long pte_low, pte_high; 1854321d94SJeremy Fitzhardinge }; 1954321d94SJeremy Fitzhardinge pteval_t pte; 2054321d94SJeremy Fitzhardinge } pte_t; 2154321d94SJeremy Fitzhardinge #endif /* !__ASSEMBLY__ */ 2254321d94SJeremy Fitzhardinge 23b924a281SJeremy Fitzhardinge #ifdef CONFIG_PARAVIRT 24b924a281SJeremy Fitzhardinge #define SHARED_KERNEL_PMD (pv_info.shared_kernel_pmd) 25b924a281SJeremy Fitzhardinge #else 26b924a281SJeremy Fitzhardinge #define SHARED_KERNEL_PMD 1 27b924a281SJeremy Fitzhardinge #endif 28b924a281SJeremy Fitzhardinge 29b924a281SJeremy Fitzhardinge /* 30b924a281SJeremy Fitzhardinge * PGDIR_SHIFT determines what a top-level page table entry can map 31b924a281SJeremy Fitzhardinge */ 32b924a281SJeremy Fitzhardinge #define PGDIR_SHIFT 30 33b924a281SJeremy Fitzhardinge #define PTRS_PER_PGD 4 34b924a281SJeremy Fitzhardinge 35b924a281SJeremy Fitzhardinge /* 36b924a281SJeremy Fitzhardinge * PMD_SHIFT determines the size of the area a middle-level 37b924a281SJeremy Fitzhardinge * page table can map 38b924a281SJeremy Fitzhardinge */ 39b924a281SJeremy Fitzhardinge #define PMD_SHIFT 21 40b924a281SJeremy Fitzhardinge #define PTRS_PER_PMD 512 41b924a281SJeremy Fitzhardinge 42b924a281SJeremy Fitzhardinge /* 43b924a281SJeremy Fitzhardinge * entries per page directory level 44b924a281SJeremy Fitzhardinge */ 45b924a281SJeremy Fitzhardinge #define PTRS_PER_PTE 512 46b924a281SJeremy Fitzhardinge 4754321d94SJeremy Fitzhardinge 48b924a281SJeremy Fitzhardinge #endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */ 49