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| author | Paul Mundt <lethal@linux-sh.org> | 2010-01-13 13:18:39 +0300 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2010-01-13 13:18:39 +0300 |
| commit | e44d6c4010a4c84369013932eea4721d16cbc08d (patch) | |
| tree | 8a5decf88a368edf92cfea1a6ae7cb166009dc43 /arch/sh/include/asm/pgtable-2level.h | |
| parent | 782bb5a532f883540bf403afb19f735a4eefd95b (diff) | |
| download | linux-e44d6c4010a4c84369013932eea4721d16cbc08d.tar.xz | |
sh: Rename split-level pgtable headers.
These were originally named _nopmd and _pmd to follow their asm-generic
counterparts, but we rename them to -2level and -3level for general
consistency.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include/asm/pgtable-2level.h')
| -rw-r--r-- | arch/sh/include/asm/pgtable-2level.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable-2level.h b/arch/sh/include/asm/pgtable-2level.h new file mode 100644 index 000000000000..19bd89db17e7 --- /dev/null +++ b/arch/sh/include/asm/pgtable-2level.h @@ -0,0 +1,23 @@ +#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 */ |