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v0.8.1
https://github.com/torvalds/linux
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Tip revision: 6d796c50f84ca79f1722bb131799e5a5710c4700 authored by Linus Torvalds on 29 January 2023, 21:59:43 UTC
Linux 6.2-rc6
Tip revision: 6d796c5
pgtable-2level.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_PGTABLE_2LEVEL_H
#define __ASM_SH_PGTABLE_2LEVEL_H

#include <asm-generic/pgtable-nopmd.h>

/*
 * traditional two-level paging structure
 */
#define PAGETABLE_LEVELS	2

/* PTE bits */
#define PTE_MAGNITUDE		2	/* 32-bit PTEs */

#define PTE_SHIFT		PAGE_SHIFT
#define PTE_BITS		(PTE_SHIFT - PTE_MAGNITUDE)

/* PGD bits */
#define PGDIR_SHIFT		(PTE_SHIFT + PTE_BITS)

#define PTRS_PER_PGD		(PAGE_SIZE / (1 << PTE_MAGNITUDE))
#define USER_PTRS_PER_PGD	(TASK_SIZE/PGDIR_SIZE)

#endif /* __ASM_SH_PGTABLE_2LEVEL_H */
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