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| author | Jungseok Lee <jays.lee@samsung.com> | 2014-05-12 11:40:38 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2014-07-23 16:27:21 +0200 |
| commit | e41ceed035966d593ae34c3de33924965a6b9fba (patch) | |
| tree | 505e26883b4914fa6b131902cd6a4b5f9dccc7b2 /arch/arm64/include/asm/pgalloc.h | |
| parent | arm64: Do not initialise the fixmap page tables in head.S (diff) | |
| download | linux-e41ceed035966d593ae34c3de33924965a6b9fba.tar.xz linux-e41ceed035966d593ae34c3de33924965a6b9fba.zip | |
arm64: Introduce VA_BITS and translation level options
This patch adds virtual address space size and a level of translation
tables to kernel configuration. It facilicates introduction of
different MMU options, such as 4KB + 4 levels, 16KB + 4 levels and
64KB + 3 levels, easily.
The idea is based on the discussion with Catalin Marinas:
http://www.spinics.net/linux/lists/arm-kernel/msg319552.html
Signed-off-by: Jungseok Lee <jays.lee@samsung.com>
Reviewed-by: Sungjinn Chung <sungjinn.chung@samsung.com>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Jungseok Lee <jungseoklee85@gmail.com>
Diffstat (limited to 'arch/arm64/include/asm/pgalloc.h')
| -rw-r--r-- | arch/arm64/include/asm/pgalloc.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h index 9bea6e74a001..48298376e46a 100644 --- a/arch/arm64/include/asm/pgalloc.h +++ b/arch/arm64/include/asm/pgalloc.h @@ -26,7 +26,7 @@ #define check_pgt_cache() do { } while (0) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr) { @@ -44,7 +44,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE)); } -#endif /* CONFIG_ARM64_64K_PAGES */ +#endif /* CONFIG_ARM64_2_LEVELS */ extern pgd_t *pgd_alloc(struct mm_struct *mm); extern void pgd_free(struct mm_struct *mm, pgd_t *pgd); |