diff options
Diffstat (limited to 'arch/arm64/include/asm/memory.h')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index d69c2865ae40..a713bad71db5 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -28,20 +28,20 @@ * a struct page array * * If we are configured with a 52-bit kernel VA then our VMEMMAP_SIZE - * neads to cover the memory region from the beginning of the 52-bit - * PAGE_OFFSET all the way to VA_START for 48-bit. This allows us to + * needs to cover the memory region from the beginning of the 52-bit + * PAGE_OFFSET all the way to PAGE_END for 48-bit. This allows us to * keep a constant PAGE_OFFSET and "fallback" to using the higher end * of the VMEMMAP where 52-bit support is not available in hardware. */ -#define VMEMMAP_SIZE ((_VA_START(VA_BITS_MIN) - PAGE_OFFSET) \ +#define VMEMMAP_SIZE ((_PAGE_END(VA_BITS_MIN) - PAGE_OFFSET) \ >> (PAGE_SHIFT - STRUCT_PAGE_MAX_SHIFT)) /* - * PAGE_OFFSET - the virtual address of the start of the linear map (top - * (VA_BITS - 1)) - * KIMAGE_VADDR - the virtual address of the start of the kernel image + * PAGE_OFFSET - the virtual address of the start of the linear map, at the + * start of the TTBR1 address space. + * PAGE_END - the end of the linear map, where all other kernel mappings begin. + * KIMAGE_VADDR - the virtual address of the start of the kernel image. * VA_BITS - the maximum number of bits for virtual addresses. - * VA_START - the first kernel virtual address. */ #define VA_BITS (CONFIG_ARM64_VA_BITS) #define _PAGE_OFFSET(va) (-(UL(1) << (va))) @@ -64,7 +64,7 @@ #define VA_BITS_MIN (VA_BITS) #endif -#define _VA_START(va) (-(UL(1) << ((va) - 1))) +#define _PAGE_END(va) (-(UL(1) << ((va) - 1))) #define KERNEL_START _text #define KERNEL_END _end @@ -87,7 +87,7 @@ #define KASAN_THREAD_SHIFT 1 #else #define KASAN_THREAD_SHIFT 0 -#define KASAN_SHADOW_END (_VA_START(VA_BITS_MIN)) +#define KASAN_SHADOW_END (_PAGE_END(VA_BITS_MIN)) #endif /* CONFIG_KASAN */ #define MIN_THREAD_SHIFT (14 + KASAN_THREAD_SHIFT) @@ -173,7 +173,7 @@ #ifndef __ASSEMBLY__ extern u64 vabits_actual; -#define VA_START (_VA_START(vabits_actual)) +#define PAGE_END (_PAGE_END(vabits_actual)) #include <linux/bitops.h> #include <linux/mmdebug.h> |