--- zzzz-none-000/linux-2.6.19.2/include/asm-i386/segment.h	2007-01-10 19:10:37.000000000 +0000
+++ davinci-8020-5505/linux-2.6.19.2/include/asm-i386/segment.h	2007-01-19 14:42:56.000000000 +0000
@@ -84,9 +84,9 @@
 #define GDT_SIZE (GDT_ENTRIES * 8)
 
 /* Matches __KERNEL_CS and __USER_CS (they must be 2 entries apart) */
-#define SEGMENT_IS_FLAT_CODE(x)  (((x) & 0xec) == GDT_ENTRY_KERNEL_CS * 8)
+#define SEGMENT_IS_FLAT_CODE(x)  (((x) & 0xFFFCU) == __KERNEL_CS || ((x) & 0xFFFCU) == __USER_CS)
 /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */
-#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
+#define SEGMENT_IS_PNP_CODE(x)   (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16)
 
 /* Simple and small GDT entries for booting only */