[mirror_ubuntu-bionic-kernel.git] / arch / sh / include / asm / pgtable-2level.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_PGTABLE_2LEVEL_H
#define __ASM_SH_PGTABLE_2LEVEL_H

#define __ARCH_USE_5LEVEL_HACK
#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 */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
e44d6c40 PM	2	#ifndef __ASM_SH_PGTABLE_2LEVEL_H
e44d6c40 PM	3	#define __ASM_SH_PGTABLE_2LEVEL_H
b73c8063	4
9849a569	5	#define __ARCH_USE_5LEVEL_HACK
b73c8063 MF	6	#include <asm-generic/pgtable-nopmd.h>
	7
	8	/*
	9	* traditional two-level paging structure
	10	*/
782bb5a5	11	#define PAGETABLE_LEVELS 2
b73c8063 MF	12
b73c8063 MF	13	/* PTE bits */
782bb5a5	14	#define PTE_MAGNITUDE 2 /* 32-bit PTEs */
b73c8063	15
782bb5a5 PM	16	#define PTE_SHIFT PAGE_SHIFT
782bb5a5 PM	17	#define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE)
b73c8063 MF	18
b73c8063 MF	19	/* PGD bits */
782bb5a5	20	#define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS)
b73c8063	21
782bb5a5	22	#define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE))
b73c8063 MF	23	#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
b73c8063 MF	24
e44d6c40	25	#endif /* __ASM_SH_PGTABLE_2LEVEL_H */