x86: processor.h - use PAGE_SIZE instead of numeric value
This patch replaces numeric constant with an appropriate macro
Also 0x800000000000UL is changed to bit shifting which is complement
to the code comment (thanks hpa for notice)
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 40227c9..b0dece4 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -870,7 +870,7 @@
/*
* User space process size. 47bits minus one guard page.
*/
-#define TASK_SIZE64 (0x800000000000UL - 4096)
+#define TASK_SIZE64 ((1UL << 47) - PAGE_SIZE)
/* This decides where the kernel will search for a free chunk of vm
* space during mmap's.