arm64: introduce VA_START macro - the first kernel virtual address.

[deliverable/linux.git] / arch / arm64 / include / asm / memory.h

diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index 44a59c20e77358f98c7ad22c8ace5a1dd07bc7fd..11ccf6c095331599e93ccf5620555d3466166df1 100644 (file)
--- 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)
@@ -80,12 +82,6 @@
 #define __virt_to_phys(x)      (((phys_addr_t)(x) - PAGE_OFFSET + PHYS_OFFSET))
 #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
  */