diff options
Diffstat (limited to 'kernel/arch/arm64/include/asm/memory.h')
| -rw-r--r-- | kernel/arch/arm64/include/asm/memory.h | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/kernel/arch/arm64/include/asm/memory.h b/kernel/arch/arm64/include/asm/memory.h index 44a59c20e..853953cd1 100644 --- a/kernel/arch/arm64/include/asm/memory.h +++ b/kernel/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) @@ -68,10 +70,6 @@ #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 4)) -#if TASK_SIZE_64 > MODULES_VADDR -#error Top of 64-bit user space clashes with start of module space -#endif - /* * Physical vs virtual RAM address space conversion. These are * private definitions which should NOT be used outside memory.h @@ -81,12 +79,6 @@ #define __phys_to_virt(x) ((unsigned long)((x) - PHYS_OFFSET + PAGE_OFFSET)) /* - * Convert a physical address to a Page Frame Number and back - */ -#define __phys_to_pfn(paddr) ((unsigned long)((paddr) >> PAGE_SHIFT)) -#define __pfn_to_phys(pfn) ((phys_addr_t)(pfn) << PAGE_SHIFT) - -/* * Convert a page to/from a physical address */ #define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page))) @@ -100,6 +92,7 @@ #define MT_DEVICE_GRE 2 #define MT_NORMAL_NC 3 #define MT_NORMAL 4 +#define MT_NORMAL_WT 5 /* * Memory types for Stage-2 translation |