/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
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#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H
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#ifndef __ASSEMBLY__
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#include <linux/types.h>
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typedef u64 pteval_t;
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typedef u64 pmdval_t;
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typedef u64 pudval_t;
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typedef u64 p4dval_t;
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typedef u64 pgdval_t;
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typedef u64 pgprotval_t;
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typedef union {
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struct {
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unsigned long pte_low, pte_high;
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};
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pteval_t pte;
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} pte_t;
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#endif /* !__ASSEMBLY__ */
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#define SHARED_KERNEL_PMD (!static_cpu_has(X86_FEATURE_PTI))
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#define ARCH_PAGE_TABLE_SYNC_MASK (SHARED_KERNEL_PMD ? 0 : PGTBL_PMD_MODIFIED)
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/*
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* PGDIR_SHIFT determines what a top-level page table entry can map
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*/
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#define PGDIR_SHIFT 30
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#define PTRS_PER_PGD 4
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/*
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* PMD_SHIFT determines the size of the area a middle-level
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* page table can map
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*/
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#define PMD_SHIFT 21
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#define PTRS_PER_PMD 512
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/*
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* entries per page directory level
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*/
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#define PTRS_PER_PTE 512
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#define MAX_POSSIBLE_PHYSMEM_BITS 36
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#define PGD_KERNEL_START (CONFIG_PAGE_OFFSET >> PGDIR_SHIFT)
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#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */
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