--- xeno-unstable/xen/arch/i386/Rules.mk.orig	2004-03-18 04:57:00.000000000 +0100
+++ xeno-unstable/xen/arch/i386/Rules.mk	2004-03-18 08:48:13.000000000 +0100
@@ -12,6 +12,8 @@
 CFLAGS  += -fomit-frame-pointer -I$(BASEDIR)/include -D__KERNEL__ -DNDEBUG
 #CFLAGS  += -fomit-frame-pointer -I$(BASEDIR)/include -D__KERNEL__
 CFLAGS  += -Wno-pointer-arith -Wredundant-decls -m32
+TARGET_CPU := i686
+CFLAGS  += -march=$(TARGET_CPU)
 LDARCHFLAGS := --oformat elf32-i386 
 LDFLAGS := -T xeno.lds -N