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authorJungseok Lee <jays.lee@samsung.com>2014-05-12 10:40:38 +0100
committerCatalin Marinas <catalin.marinas@arm.com>2014-07-23 15:27:21 +0100
commite41ceed035966d593ae34c3de33924965a6b9fba (patch)
tree505e26883b4914fa6b131902cd6a4b5f9dccc7b2 /arch/arm64/include/asm/pgalloc.h
parent7edd88ad7e59c2b7b49da0e00f251884fb785d4f (diff)
downloadlinux-e41ceed035966d593ae34c3de33924965a6b9fba.tar.gz
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.h4
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);