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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-03-05 15:46:18 -0500 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2010-03-05 15:46:18 -0500 |
| commit | 3fa04ecd72780da31ba8b329e148179bc24a9c7d (patch) | |
| tree | f5d462fd4aee086952d18f159f737c450ab46b3b /arch/sh/include/asm/pgtable-2level.h | |
| parent | 180b62a3d837613fcac3ce89576526423926c3c3 (diff) | |
| parent | 1cda707d52e51a6cafac0aef12d2bd7052d572e6 (diff) | |
Merge branch 'writeback-for-2.6.34' into nfs-for-2.6.34
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 */ |