| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | #ifndef _ASM_X86_PGTABLE_2LEVEL_DEFS_H |
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| 3 | #define _ASM_X86_PGTABLE_2LEVEL_DEFS_H |
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| 4 | |
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| 5 | #ifndef __ASSEMBLER__ |
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| 6 | #include <linux/types.h> |
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| 7 | |
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| 8 | typedef unsigned long pteval_t; |
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| 9 | typedef unsigned long pmdval_t; |
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| 10 | typedef unsigned long pudval_t; |
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| 11 | typedef unsigned long p4dval_t; |
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| 12 | typedef unsigned long pgdval_t; |
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| 13 | typedef unsigned long pgprotval_t; |
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| 14 | |
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| 15 | typedef union { |
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| 16 | pteval_t pte; |
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| 17 | pteval_t pte_low; |
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| 18 | } pte_t; |
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| 19 | #endif /* !__ASSEMBLER__ */ |
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| 20 | |
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| 21 | #define ARCH_PAGE_TABLE_SYNC_MASK PGTBL_PMD_MODIFIED |
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| 22 | |
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| 23 | /* |
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| 24 | * Traditional i386 two-level paging structure: |
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| 25 | */ |
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| 26 | |
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| 27 | #define PGDIR_SHIFT 22 |
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| 28 | #define PTRS_PER_PGD 1024 |
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| 29 | |
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| 30 | /* |
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| 31 | * The i386 is two-level, so we don't really have any |
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| 32 | * PMD directory physically: |
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| 33 | */ |
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| 34 | #define PTRS_PER_PMD 1 |
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| 35 | |
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| 36 | #define PTRS_PER_PTE 1024 |
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| 37 | |
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| 38 | /* This covers all VMSPLIT_* and VMSPLIT_*_OPT variants */ |
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| 39 | #define PGD_KERNEL_START (CONFIG_PAGE_OFFSET >> PGDIR_SHIFT) |
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| 40 | |
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| 41 | #endif /* _ASM_X86_PGTABLE_2LEVEL_DEFS_H */ |
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| 42 | |
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