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| author | Catalin Marinas <catalin.marinas@arm.com> | 2012-07-25 17:39:26 +0400 |
|---|---|---|
| committer | Steve Capper <steve.capper@linaro.org> | 2013-06-04 19:52:38 +0400 |
| commit | 8d962507007357d6fbbcbdd1647faa389a9aed6d (patch) | |
| tree | 019135b49067394cfd3c002d4900aba91089f66f /arch/arm/include/asm/pgtable-3level-hwdef.h | |
| parent | 1355e2a6eb88f04d76125c057dc5fca64d4b6a9e (diff) | |
| download | linux-8d962507007357d6fbbcbdd1647faa389a9aed6d.tar.xz | |
ARM: mm: Transparent huge page support for LPAE systems.
The patch adds support for THP (transparent huge pages) to LPAE
systems. When this feature is enabled, the kernel tries to map
anonymous pages as 2MB sections where possible.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
[steve.capper@linaro.org: symbolic constants used, value of
PMD_SECT_SPLITTING adjusted, tlbflush.h included in pgtable.h,
added PROT_NONE support.]
Signed-off-by: Steve Capper <steve.capper@linaro.org>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm/include/asm/pgtable-3level-hwdef.h')
| -rw-r--r-- | arch/arm/include/asm/pgtable-3level-hwdef.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h index 42df407ee3e3..f088c864c992 100644 --- a/arch/arm/include/asm/pgtable-3level-hwdef.h +++ b/arch/arm/include/asm/pgtable-3level-hwdef.h @@ -42,6 +42,8 @@ */ #define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2) #define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3) +#define PMD_SECT_USER (_AT(pmdval_t, 1) << 6) /* AP[1] */ +#define PMD_SECT_RDONLY (_AT(pmdval_t, 1) << 7) /* AP[2] */ #define PMD_SECT_S (_AT(pmdval_t, 3) << 8) #define PMD_SECT_AF (_AT(pmdval_t, 1) << 10) #define PMD_SECT_nG (_AT(pmdval_t, 1) << 11) |