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mm/slub.c: add a naive detection of double free or corruption
[linux.git] / arch / sh / include / asm / pgtable-2level.h
1 #ifndef __ASM_SH_PGTABLE_2LEVEL_H
2 #define __ASM_SH_PGTABLE_2LEVEL_H
3
4 #define __ARCH_USE_5LEVEL_HACK
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 */
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