diff options
| author | David Daney <ddaney@caviumnetworks.com> | 2009-12-04 16:52:36 -0500 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-02-27 06:53:03 -0500 |
| commit | 325f8a0a31df567dbafafc48f8e60f3c1f101a46 (patch) | |
| tree | b36383f4d483ecc6d057cdd41ef50b6403e89b9c /arch/mips/include/asm/pgtable.h | |
| parent | ef6c1fd662d18c0e2ed92825c8837e94b5ec3a1f (diff) | |
MIPS: Two-level pagetables for 64-bit kernels with 64KB pages.
For 64-bit kernels with 64KB pages and two level page tables, there are
42 bits worth of virtual address space This is larger than the 40 bits of
virtual address space obtained with the default 4KB Page size and three
levels, so there are no draw backs for using two level tables with this
configuration.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: http://patchwork.linux-mips.org/patch/761/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/pgtable.h')
| -rw-r--r-- | arch/mips/include/asm/pgtable.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h index 1854336e56a2..02335fda9e77 100644 --- a/arch/mips/include/asm/pgtable.h +++ b/arch/mips/include/asm/pgtable.h | |||
| @@ -177,7 +177,7 @@ static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *pt | |||
| 177 | */ | 177 | */ |
| 178 | #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) | 178 | #define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0) |
| 179 | 179 | ||
| 180 | #ifdef CONFIG_64BIT | 180 | #ifndef __PAGETABLE_PMD_FOLDED |
| 181 | /* | 181 | /* |
| 182 | * (puds are folded into pgds so this doesn't get actually called, | 182 | * (puds are folded into pgds so this doesn't get actually called, |
| 183 | * but the define is needed for a generic inline function.) | 183 | * but the define is needed for a generic inline function.) |