Revert "Passes cache location to tests and runs the tests in parallel."

lib/cros_vm_lib.sh

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Common vm functions for use in crosutils.
 
 DEFINE_string kvm_pid "" \
   "Use this pid file.  If it exists and is set, use the vm specified by pid."
 DEFINE_boolean no_graphics ${FLAGS_FALSE} "Runs the KVM instance silently."
 DEFINE_boolean persist "${FLAGS_FALSE}" "Persist vm."
@@ skipping 20 matching lines @@
   local timeout=1
   sudo kill -$2 $1
   while ps -p $1 > /dev/null && [ ${timeout} -le $3 ]; do
     warn "Process still running, sleeping for ${timeout}"
     sleep ${timeout}
     timeout=$((timeout*2))
   done
   ! ps -p ${1} > /dev/null
 }
 
+# TODO(rtc): These flags assume that we'll be using KVM on Lucid and won't work
+# on Hardy.
 # $1: Path to the virtual image to start.
 function start_kvm() {
   # Override default pid file.
   [ -n "${FLAGS_kvm_pid}" ] && KVM_PID_FILE=${FLAGS_kvm_pid}
   if [ -e "${KVM_PID_FILE}" ]; then
     local pid=$(get_pid)
     # Check if the process exists.
     if ps -p ${pid} > /dev/null ; then
       echo "Using a pre-created KVM instance specified by ${FLAGS_kvm_pid}." >&2
     else
@@ skipping 72 matching lines @@
     if [ -n "${pid}" ]; then
       echo "Killing ${pid}" >&2
       blocking_kill ${pid} 1 16 || blocking_kill 9 1
       sudo rm "${KVM_PID_FILE}"
     else
       echo "No kvm pid found to stop." >&2
       return 1
     fi
   fi
 }