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authorJack Tan <jack.tan@windriver.com>2008-09-23 22:52:34 +0800
committerRalf Baechle <ralf@linux-mips.org>2008-09-24 00:26:55 +0200
commit5291925a9a65ea334f6e887d0f01dd119b8e2b2e (patch)
tree7cacbbf17ae6b22d9be55c4b862fa064082bf531
parent44ce17192a01218b242e032237e1d2e52ef50429 (diff)
[MIPS] Fixe the definition of PTRS_PER_PGD
When we use > 4KB's page size the original definition is not consistent with PGDIR_SIZE. For exeample, if we use 16KB page size the PGDIR_SHIFT is (14-2) + 14 = 26, PGDIR_SIZE is 2^26,so the PTRS_PER_PGD should be: 2^32/2^26 = 2^6 but the original definition of PTRS_PER_PGD is 4096 (PGDIR_ORDER = 0). So, this definition needs to be consistent with the PGDIR_SIZE. And the new definition is consistent with the PGD init in pagetable_init(). Signed-off-by: Dajie Tan <jiankemeng@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--include/asm-mips/pgtable-32.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h
index 4396e9ffd41..55813d6150c 100644
--- a/include/asm-mips/pgtable-32.h
+++ b/include/asm-mips/pgtable-32.h
@@ -57,7 +57,7 @@ extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
#define PMD_ORDER 1
#define PTE_ORDER 0
-#define PTRS_PER_PGD ((PAGE_SIZE << PGD_ORDER) / sizeof(pgd_t))
+#define PTRS_PER_PGD (USER_PTRS_PER_PGD * 2)
#define PTRS_PER_PTE ((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
#define USER_PTRS_PER_PGD (0x80000000UL/PGDIR_SIZE)