arch/sh/include/asm/pgtable-2level.h

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