x86: use something common for both architectures.

Using explicit hexa (0xFFFFFFUL) introduces an unnecessary difference
between i386 and x86_64 because of the size of their long. Use -1UL instead.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/include/asm-x86/uaccess_32.h b/include/asm-x86/uaccess_32.h
index eed8d94..2676b48 100644 (file)
--- a/include/asm-x86/uaccess_32.h
+++ b/include/asm-x86/uaccess_32.h
@@ -25,7 +25,7 @@
 #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
 
 
-#define KERNEL_DS      MAKE_MM_SEG(0xFFFFFFFFUL)
+#define KERNEL_DS      MAKE_MM_SEG(-1UL)
 #define USER_DS                MAKE_MM_SEG(PAGE_OFFSET)
 
 #define get_ds()       (KERNEL_DS)

diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h
index 0077dbe..3a81775 100644 (file)
--- a/include/asm-x86/uaccess_64.h
+++ b/include/asm-x86/uaccess_64.h
@@ -22,7 +22,7 @@
 
 #define MAKE_MM_SEG(s) ((mm_segment_t) { (s) })
 
-#define KERNEL_DS      MAKE_MM_SEG(0xFFFFFFFFFFFFFFFFUL)
+#define KERNEL_DS      MAKE_MM_SEG(-1UL)
 #define USER_DS                MAKE_MM_SEG(PAGE_OFFSET)
 
 #define get_ds()       (KERNEL_DS)