| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __ASM_SH_PGTABLE_2LEVEL_H |
| 3 | #define __ASM_SH_PGTABLE_2LEVEL_H |
| 4 | |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 5 | #include <asm-generic/pgtable-nopmd.h> |
| 6 | |
| 7 | /* |
| 8 | * traditional two-level paging structure |
| 9 | */ |
| 10 | #define PAGETABLE_LEVELS 2 |
| 11 | |
| 12 | /* PTE bits */ |
| 13 | #define PTE_MAGNITUDE 2 /* 32-bit PTEs */ |
| 14 | |
| 15 | #define PTE_SHIFT PAGE_SHIFT |
| 16 | #define PTE_BITS (PTE_SHIFT - PTE_MAGNITUDE) |
| 17 | |
| 18 | /* PGD bits */ |
| 19 | #define PGDIR_SHIFT (PTE_SHIFT + PTE_BITS) |
| 20 | |
| 21 | #define PTRS_PER_PGD (PAGE_SIZE / (1 << PTE_MAGNITUDE)) |
| 22 | #define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE) |
| 23 | |
| 24 | #endif /* __ASM_SH_PGTABLE_2LEVEL_H */ |