qemu.tests: check kvm-clock using newer msr set

Signed-off-by: NXu Tian <xutian@redhat.com>

qemu/tests/timerdevice_kvmclock_newer_msrs_support.py

+import re
+import logging
+from autotest.client.shared import error
+
+
+@error.context_aware
+def run_timerdevice_kvmclock_newer_msrs_support(test, params, env):
+    """
+    check kvm-clock using newer msrs test (only for Linux guest):
+
+    1) boot guest with '-rtc base=utc,clock=host,driftfix=slew'
+    2) verify guest using newer msrs set
+
+    :param test: QEMU test object.
+    :param params: Dictionary with test parameters.
+    :param env: Dictionary with the test environment.
+    """
+    vm = env.get_vm(params["main_vm"])
+    vm.verify_alive()
+    timeout = int(params.get("login_timeout", 360))
+    session = vm.wait_for_login(timeout=timeout)
+
+    msrs = str(params["msrs"]).split()
+    dmesg = str(session.cmd_output("dmesg"))
+    msrs_catch_re = params.get("msrs_catch_re",
+                               "kvm-clock: Using msrs (\w+) and (\w+)")
+    current_msrs = re.search(r"%s" % msrs_catch_re, dmesg, re.M | re.I)
+    if current_msrs:
+        current_msrs = set(current_msrs.groups())
+        if current_msrs != set(msrs):
+            raise error.TestFail("Except msrs (%s), " % msrs +
+                                 "got (%s)" % current_msrs)
+    else:
+        logging.debug(dmesg)
+        raise error.TestFail("No newer msr available for kvm-clock")