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| Started by | Andrey Ryabinin <ryabinin.a.a@gmail.com> |
|---|---|
| First post | 2015-08-11 00:30 +0200 |
| Last post | 2015-08-11 00:30 +0200 |
| Articles | 1 — 1 participant |
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[PATCH v5 3/6] arm64: introduce VA_START macro - the first kernel virtual address. Andrey Ryabinin <ryabinin.a.a@gmail.com> - 2015-08-11 00:30 +0200
| From | Andrey Ryabinin <ryabinin.a.a@gmail.com> |
|---|---|
| Date | 2015-08-11 00:30 +0200 |
| Subject | [PATCH v5 3/6] arm64: introduce VA_START macro - the first kernel virtual address. |
| Message-ID | <pW3JT-2OH-1@gated-at.bofh.it> |
In order to not use lengthy (UL(0xffffffffffffffff) << VA_BITS) everywhere, replace it with VA_START. Signed-off-by: Andrey Ryabinin <ryabinin.a.a@gmail.com> Reviewed-by: Catalin Marinas <catalin.marinas@arm.com> --- arch/arm64/include/asm/memory.h | 2 ++ arch/arm64/include/asm/pgtable.h | 2 +- 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index f800d45..288c19d 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -42,12 +42,14 @@ * PAGE_OFFSET - the virtual address of the start of the kernel image (top * (VA_BITS - 1)) * VA_BITS - the maximum number of bits for virtual addresses. + * VA_START - the first kernel virtual address. * TASK_SIZE - the maximum size of a user space task. * TASK_UNMAPPED_BASE - the lower boundary of the mmap VM area. * The module space lives between the addresses given by TASK_SIZE * and PAGE_OFFSET - it must be within 128MB of the kernel text. */ #define VA_BITS (CONFIG_ARM64_VA_BITS) +#define VA_START (UL(0xffffffffffffffff) << 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/pgtable.h b/arch/arm64/include/asm/pgtable.h index 56283f8..a1f9f61 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -40,7 +40,7 @@ * fixed mappings and modules */ #define VMEMMAP_SIZE ALIGN((1UL << (VA_BITS - PAGE_SHIFT)) * sizeof(struct page), PUD_SIZE) -#define VMALLOC_START (UL(0xffffffffffffffff) << VA_BITS) +#define VMALLOC_START (VA_START) #define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K) #define vmemmap ((struct page *)(VMALLOC_END + SZ_64K)) -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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