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authorDavid Daney <ddaney@caviumnetworks.com>2009-12-04 13:52:36 -0800
committerRalf Baechle <ralf@linux-mips.org>2010-02-27 12:53:03 +0100
commit325f8a0a31df567dbafafc48f8e60f3c1f101a46 (patch)
treeb36383f4d483ecc6d057cdd41ef50b6403e89b9c /arch/mips/include/asm/pgtable.h
parentef6c1fd662d18c0e2ed92825c8837e94b5ec3a1f (diff)
downloadlinux-stericsson-325f8a0a31df567dbafafc48f8e60f3c1f101a46.tar.gz
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.h2
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
*/
#define set_pmd(pmdptr, pmdval) do { *(pmdptr) = (pmdval); } while(0)
-#ifdef CONFIG_64BIT
+#ifndef __PAGETABLE_PMD_FOLDED
/*
* (puds are folded into pgds so this doesn't get actually called,
* but the define is needed for a generic inline function.)