Index: xen/xen-unstable.hg/tools/xm-test/tests/vtpm/vtpm_utils.py
===================================================================
--- xen.orig/xen-unstable.hg/tools/xm-test/tests/vtpm/vtpm_utils.py
+++ xen/xen-unstable.hg/tools/xm-test/tests/vtpm/vtpm_utils.py
@@ -8,7 +8,7 @@ from XmTestLib import *
 if ENABLE_HVM_SUPPORT:
     SKIP("vtpm tests not supported for HVM domains")
 
-if not os.path.isfile("/dev/tpm0"):
+if not os.path.exists("/dev/tpm0"):
     SKIP("This machine has no hardware TPM; cannot run this test")
 
 status, output = traceCommand("ps aux | grep vtpm_manager | grep -v grep")