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| author | Jack Tan <jack.tan@windriver.com> | 2008-09-23 22:52:34 +0800 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-09-24 00:26:55 +0200 |
| commit | 5291925a9a65ea334f6e887d0f01dd119b8e2b2e (patch) | |
| tree | 7cacbbf17ae6b22d9be55c4b862fa064082bf531 /include | |
| parent | 44ce17192a01218b242e032237e1d2e52ef50429 (diff) | |
| download | op-kernel-dev-5291925a9a65ea334f6e887d0f01dd119b8e2b2e.zip op-kernel-dev-5291925a9a65ea334f6e887d0f01dd119b8e2b2e.tar.gz | |
[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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-mips/pgtable-32.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-mips/pgtable-32.h b/include/asm-mips/pgtable-32.h index 4396e9f..55813d6 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) |
