diff options
author | Jungseok Lee <jays.lee@samsung.com> | 2014-05-12 09:40:38 (GMT) |
---|---|---|
committer | Catalin Marinas <catalin.marinas@arm.com> | 2014-07-23 14:27:21 (GMT) |
commit | e41ceed035966d593ae34c3de33924965a6b9fba (patch) | |
tree | 505e26883b4914fa6b131902cd6a4b5f9dccc7b2 /arch/arm64/include/asm | |
parent | 7edd88ad7e59c2b7b49da0e00f251884fb785d4f (diff) | |
download | linux-e41ceed035966d593ae34c3de33924965a6b9fba.tar.xz |
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')
-rw-r--r-- | arch/arm64/include/asm/memory.h | 6 | ||||
-rw-r--r-- | arch/arm64/include/asm/page.h | 2 | ||||
-rw-r--r-- | arch/arm64/include/asm/pgalloc.h | 4 | ||||
-rw-r--r-- | arch/arm64/include/asm/pgtable-hwdef.h | 2 | ||||
-rw-r--r-- | arch/arm64/include/asm/pgtable.h | 8 | ||||
-rw-r--r-- | arch/arm64/include/asm/tlb.h | 2 |
6 files changed, 10 insertions, 14 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index 993bce5..45ad6cf 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -41,11 +41,7 @@ * The module space lives between the addresses given by TASK_SIZE * and PAGE_OFFSET - it must be within 128MB of the kernel text. */ -#ifdef CONFIG_ARM64_64K_PAGES -#define VA_BITS (42) -#else -#define VA_BITS (39) -#endif +#define VA_BITS (CONFIG_ARM64_VA_BITS) #define PAGE_OFFSET (UL(0xffffffffffffffff) << (VA_BITS - 1)) #define MODULES_END (PAGE_OFFSET) #define MODULES_VADDR (MODULES_END - SZ_64M) diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h index e84ca63..1cbde27 100644 --- a/arch/arm64/include/asm/page.h +++ b/arch/arm64/include/asm/page.h @@ -42,7 +42,7 @@ #ifndef __ASSEMBLY__ -#ifdef CONFIG_ARM64_64K_PAGES +#ifdef CONFIG_ARM64_2_LEVELS #include <asm/pgtable-2level-types.h> #else #include <asm/pgtable-3level-types.h> diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h index 9bea6e7..4829837 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); diff --git a/arch/arm64/include/asm/pgtable-hwdef.h b/arch/arm64/include/asm/pgtable-hwdef.h index 955e8c5..c7c603b 100644 --- a/arch/arm64/include/asm/pgtable-hwdef.h +++ b/arch/arm64/include/asm/pgtable-hwdef.h @@ -16,7 +16,7 @@ #ifndef __ASM_PGTABLE_HWDEF_H #define __ASM_PGTABLE_HWDEF_H -#ifdef CONFIG_ARM64_64K_PAGES +#ifdef CONFIG_ARM64_2_LEVELS #include <asm/pgtable-2level-hwdef.h> #else #include <asm/pgtable-3level-hwdef.h> diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index d7455fa..6d58549 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -47,7 +47,7 @@ extern void __pmd_error(const char *file, int line, unsigned long val); extern void __pgd_error(const char *file, int line, unsigned long val); #define pte_ERROR(pte) __pte_error(__FILE__, __LINE__, pte_val(pte)) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd_val(pmd)) #endif #define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd_val(pgd)) @@ -323,7 +323,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd) */ #define mk_pte(page,prot) pfn_pte(page_to_pfn(page),prot) -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pud_none(pud) (!pud_val(pud)) #define pud_bad(pud) (!(pud_val(pud) & 2)) @@ -345,7 +345,7 @@ static inline pmd_t *pud_page_vaddr(pud_t pud) return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK); } -#endif /* CONFIG_ARM64_64K_PAGES */ +#endif /* CONFIG_ARM64_2_LEVELS */ /* to find an entry in a page-table-directory */ #define pgd_index(addr) (((addr) >> PGDIR_SHIFT) & (PTRS_PER_PGD - 1)) @@ -356,7 +356,7 @@ static inline pmd_t *pud_page_vaddr(pud_t pud) #define pgd_offset_k(addr) pgd_offset(&init_mm, addr) /* Find an entry in the second-level page table.. */ -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS #define pmd_index(addr) (((addr) >> PMD_SHIFT) & (PTRS_PER_PMD - 1)) static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr) { diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h index 80e2c08..bc19101 100644 --- a/arch/arm64/include/asm/tlb.h +++ b/arch/arm64/include/asm/tlb.h @@ -91,7 +91,7 @@ static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, tlb_remove_page(tlb, pte); } -#ifndef CONFIG_ARM64_64K_PAGES +#ifndef CONFIG_ARM64_2_LEVELS static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp, unsigned long addr) { |