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

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