summaryrefslogtreecommitdiffstats
path: root/include/asm-m32r/pgtable-2level.h
diff options
context:
space:
mode:
authorHirokazu Takata <takata@linux-m32r.org>2007-05-10 22:22:28 -0700
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-11 08:29:33 -0700
commit23c9bbbac57ae50dceadfda37b49785ec04dd42f (patch)
treead04af7dc8306767613dd1774bced3a75b0540c0 /include/asm-m32r/pgtable-2level.h
parent0d4f64681695b0e389f7121eb647b27c602990bc (diff)
downloadlinux-23c9bbbac57ae50dceadfda37b49785ec04dd42f.tar.bz2
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 'include/asm-m32r/pgtable-2level.h')
-rw-r--r--include/asm-m32r/pgtable-2level.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-m32r/pgtable-2level.h b/include/asm-m32r/pgtable-2level.h
index 750925726a10..bca3475f9595 100644
--- a/include/asm-m32r/pgtable-2level.h
+++ b/include/asm-m32r/pgtable-2level.h
@@ -71,8 +71,8 @@ static inline pmd_t *pmd_offset(pgd_t * dir, unsigned long address)
#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define PTE_FILE_MAX_BITS 29
-#define pte_to_pgoff(pte) (((pte_val(pte) >> 2) & 0xef) | (((pte_val(pte) >> 10)) << 7))
-#define pgoff_to_pte(off) ((pte_t) { (((off) & 0xef) << 2) | (((off) >> 7) << 10) | _PAGE_FILE })
+#define pte_to_pgoff(pte) (((pte_val(pte) >> 2) & 0x7f) | (((pte_val(pte) >> 10)) << 7))
+#define pgoff_to_pte(off) ((pte_t) { (((off) & 0x7f) << 2) | (((off) >> 7) << 10) | _PAGE_FILE })
#endif /* __KERNEL__ */
#endif /* _ASM_M32R_PGTABLE_2LEVEL_H */