diff -r b3d94f4ddffe tools/xm-test/lib/XmTestReport/arch.py
--- a/tools/xm-test/lib/XmTestReport/arch.py	Sat Oct 28 11:30:38 2006
+++ b/tools/xm-test/lib/XmTestReport/arch.py	Wed Nov  1 10:07:20 2006
@@ -28,6 +28,7 @@
     "i486"  : "x86",
     "i586"  : "x86",
     "i686"  : "x86",
+    "x86_64" : "x86_64",
     "ia64"  : "ia64",
     "ppc"   : "powerpc",
     "ppc64" : "powerpc",
@@ -35,6 +36,9 @@
 
 _arch = _uname_to_arch_map.get(os.uname()[4], "Unknown")
 if _arch == "x86":
+    cpuValues = {"model_name" : "Unknown",
+                 "flags"      : "Unknown"}
+elif _arch == "x86_64":
     cpuValues = {"model_name" : "Unknown",
                  "flags"      : "Unknown"}
 elif _arch == "ia64":
diff -r b3d94f4ddffe tools/xm-test/runtest.sh
--- a/tools/xm-test/runtest.sh	Sat Oct 28 11:30:38 2006
+++ b/tools/xm-test/runtest.sh	Wed Nov  1 10:07:20 2006
@@ -78,7 +78,13 @@
     eval $(./lib/XmTestReport/xmtest.py)
     ARCH=$(uname -m | sed -e s/i.86/i386/ -e 's/ppc\(64\)*/powerpc/')
     rrdver="initrd-${XM_TEST_MAJ}.${XM_TEST_MIN}-${ARCH}.img"
-    if [ "$realrd" != "$rrdver" ]; then
+    exp_flag=0
+    realarch=`echo $realrd | awk -F- '{print $3}' | awk -F. '{print $1}'`
+    rrdarch=`echo $rrdver | awk -F- '{print $3}' | awk -F. '{print $1}'`
+    if [ "$realarch" = "i386" -a "$rrdarch" = "x86_64" ]; then
+	exp_flag=1
+    fi
+    if [ $exp_flag -eq 0 -a "$realrd" != "$rrdver" ]; then
 	echo "Error: ramdisk/initrd.img is from an old version, or is not for this "
         echo "architecture ($ARCH)."
 	echo "You need to build a ramdisk from at least ${XM_TEST_MAJ}.${XM_TEST_MIN}"