Cregit: Linux 6.17: pgtable-3level

Contributors: 10
Author	Tokens	Token Proportion	Commits	Commit Proportion
Jeremy Fitzhardinge	35	30.17%	5	23.81%
Linus Torvalds (pre-git)	30	25.86%	5	23.81%
Ingo Molnar	15	12.93%	2	9.52%
Peter Zijlstra	14	12.07%	1	4.76%
Kirill A. Shutemov	8	6.90%	2	9.52%
Joerg Roedel	7	6.03%	2	9.52%
H. Peter Anvin	3	2.59%	1	4.76%
Thomas Huth	2	1.72%	1	4.76%
Greg Kroah-Hartman	1	0.86%	1	4.76%
Dave Hansen	1	0.86%	1	4.76%
Total	116		21

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_PGTABLE_3LEVEL_DEFS_H
#define _ASM_X86_PGTABLE_3LEVEL_DEFS_H

#ifndef __ASSEMBLER__
#include <linux/types.h>

typedef u64	pteval_t;
typedef u64	pmdval_t;
typedef u64	pudval_t;
typedef u64	p4dval_t;
typedef u64	pgdval_t;
typedef u64	pgprotval_t;

typedef union {
	struct {
		unsigned long pte_low, pte_high;
	};
	pteval_t pte;
} pte_t;

typedef union {
	struct {
		unsigned long pmd_low, pmd_high;
	};
	pmdval_t pmd;
} pmd_t;
#endif	/* !__ASSEMBLER__ */

#define ARCH_PAGE_TABLE_SYNC_MASK	PGTBL_PMD_MODIFIED

/*
 * PGDIR_SHIFT determines what a top-level page table entry can map
 */
#define PGDIR_SHIFT	30
#define PTRS_PER_PGD	4

/*
 * PMD_SHIFT determines the size of the area a middle-level
 * page table can map
 */
#define PMD_SHIFT	21
#define PTRS_PER_PMD	512

/*
 * entries per page directory level
 */
#define PTRS_PER_PTE	512

#define MAX_POSSIBLE_PHYSMEM_BITS	36
#define PGD_KERNEL_START	(CONFIG_PAGE_OFFSET >> PGDIR_SHIFT)

#endif /* _ASM_X86_PGTABLE_3LEVEL_DEFS_H */

pgtable-3level_types.h