From: Amos Kong <akong@xxxxxxxxxx>
Uses kernel supported nmi_watchdog to test the nmi support of kvm,
check the nmi count in Linux platform through /proc/interrupts.
Changes from v2:
* Updated the test to use more current KVM autotest API
Signed-off-by: Amos Kong <akong@xxxxxxxxxx>
---
client/tests/kvm/tests/nmi_watchdog.py | 60 ++++++++++++++++++++++++++++++++
client/tests/kvm/tests_base.cfg.sample | 7 ++++
2 files changed, 67 insertions(+), 0 deletions(-)
create mode 100644 client/tests/kvm/tests/nmi_watchdog.py
diff --git a/client/tests/kvm/tests/nmi_watchdog.py b/client/tests/kvm/tests/nmi_watchdog.py
new file mode 100644
index 0000000..a4b2349
--- /dev/null
+++ b/client/tests/kvm/tests/nmi_watchdog.py
@@ -0,0 +1,60 @@
+import time, logging
+from autotest_lib.client.common_lib import error
+
+
+@error.context_aware
+def run_nmi_watchdog(test, params, env):
+ """
+ Test the function of nmi injection and verify the response of guest
+
+ 1) Log in the guest
+ 2) Add 'watchdog=1' to boot option
+ 2) Check if guest's NMI counter augment after injecting nmi
+
+ @param test: kvm test object
+ @param params: Dictionary with the test parameters.
+ @param env: Dictionary with 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)
+ get_nmi_cmd= params.get("get_nmi_cmd")
+ kernel_version = session.get_command_output("uname -r").strip()
+ nmi_watchdog_type = int(params.get("nmi_watchdog_type"))
+ update_kernel_cmd = ("grubby --update-kernel=/boot/vmlinuz-%s "
+ "--args='nmi_watchdog=%d'" %
+ (kernel_version, nmi_watchdog_type))
+
+ error.context("Add 'nmi_watchdog=%d' to guest kernel cmdline and reboot"
+ % nmi_watchdog_type)
+ session.cmd(update_kernel_cmd)
+ time.sleep(int(params.get("sleep_before_reset", 10)))
+ session = vm.reboot(session, method='shell', timeout=timeout)
+ try:
+ error.context("Getting guest's number of vcpus")
+ guest_cpu_num = session.cmd(params.get("cpu_chk_cmd"))
+
+ error.context("Getting guest's NMI counter")
+ output = session.cmd(get_nmi_cmd)
+ logging.debug(output.strip())
+ nmi_counter1 = output.split()[1:]
+
+ logging.info("Waiting 60 seconds to see if guest's NMI counter "
+ "increases")
+ time.sleep(60)
+
+ error.context("Getting guest's NMI counter 2nd time")
+ output = session.cmd(get_nmi_cmd)
+ logging.debug(output.strip())
+ nmi_counter2 = output.split()[1:]
+
+ error.context("")
+ for i in range(int(guest_cpu_num)):
+ logging.info("vcpu: %s, nmi_counter1: %s, nmi_counter2: %s" %
+ (i, nmi_counter1[i], nmi_counter2[i]))
+ if int(nmi_counter2[i]) <= int(nmi_counter1[i]):
+ raise error.TestFail("Guest's NMI counter did not increase "
+ "after 60 seconds")
+ finally:
+ session.close()
diff --git a/client/tests/kvm/tests_base.cfg.sample b/client/tests/kvm/tests_base.cfg.sample
index b7342bd..d597b52 100644
--- a/client/tests/kvm/tests_base.cfg.sample
+++ b/client/tests/kvm/tests_base.cfg.sample
@@ -1108,6 +1108,13 @@ variants:
cdrom_cd1 = orig.iso
max_times = 20
+ - nmi_watchdog: install setup image_copy unattended_install.cdrom
+ type = nmi_watchdog
+ get_nmi_cmd = grep NMI /proc/interrupts
+ nmi_watchdog_type = 1
+ image_snapshot = yes
+ only Linux
+
# NICs
variants:
--
1.7.6
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