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| author |   Hirokazu Takata <takata@linux-m32r.org> | 2007-05-10 22:22:28 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-11 08:29:33 -0700 |
| commit | 23c9bbbac57ae50dceadfda37b49785ec04dd42f (patch) | |
| tree | ad04af7dc8306767613dd1774bced3a75b0540c0 /include/asm-m32r/pgtable.h | |
| parent | m32r: fix tme_handler to check _PAGE_PRESENT bit (diff) | |
| download | linux-dev-23c9bbbac57ae50dceadfda37b49785ec04dd42f.tar.xz linux-dev-23c9bbbac57ae50dceadfda37b49785ec04dd42f.zip | |
m32r: fix pte_to_pgoff(), pgoff_to_pte() and __swp_type() macros
This patch is required to handle file-mapped or swapped-out pages
correctly.
- Fix pte_to_pgoff() and pgoff_to_pte() macros not to include
_PAGE_PROTNONE bit of PTE.
Mask value for { ACCESSED, N, (R, W, X), L, G } is not 0xef but 0x7f.
- Fix __swp_type() macro for MAX_SWAPFILES_SHIFT(=5), which is defined
in include/linux/swap.h.
* M32R TLB format
[0] [1:19] [20:23] [24:31]
+-----------------------+----+-------------+
| VPN |0000| ASID |
+-----------------------+----+-------------+
+-+---------------------+----+-+---+-+-+-+-+
|0 PPN |0000|N|AC |L|G|V| |
+-+---------------------+----+-+---+-+-+-+-+
|| RWX | |
* software bits in PTE || | +-- _PAGE_FILE | _PAGE_DIRTY
|| +---- _PAGE_PRESENT
|+---------------- _PAGE_ACCESSED
+----------------- _PAGE_PROTNONE
Signed-off-by: Hitoshi Yamamoto <hitoshiy@linux-m32r.org>
Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to '')
| -rw-r--r-- | include/asm-m32r/pgtable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-m32r/pgtable.h b/include/asm-m32r/pgtable.h index 8b2a2f17e695..6604303fc47c 100644 --- a/include/asm-m32r/pgtable.h +++ b/include/asm-m32r/pgtable.h @@ -366,7 +366,7 @@ static inline void pmd_set(pmd_t * pmdp, pte_t * ptep) #define pte_unmap_nested(pte) do { } while (0) /* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 2) & 0x3f) +#define __swp_type(x) (((x).val >> 2) & 0x1f) #define __swp_offset(x) ((x).val >> 10) #define __swp_entry(type, offset) \ ((swp_entry_t) { ((type) << 2) | ((offset) << 10) }) |