kernel_optimize_test/arch/sh/include/asm/pgtable_nopmd.h
Matt Fleming b73c806341 sh: Abstract the number of page table levels
Keep the dimensions of the page tables in a separate header file in
preparation for allowing a three level page table structure.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-12-17 14:31:15 +09:00

23 lines
493 B
C

#ifndef __ASM_SH_PGTABLE_NOPMD_H
#define __ASM_SH_PGTABLE_NOPMD_H
#include <asm-generic/pgtable-nopmd.h>
/*
* traditional two-level paging structure
*/
/* 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_NOPMD_H */