tests/avocado/hotplug_cpu.py

   1 # Functional test that hotplugs a CPU and checks it on a Linux guest
   2 #
   3 # Copyright (c) 2021 Red Hat, Inc.
   4 #
   5 # Author:
   6 #  Cleber Rosa <crosa@redhat.com>
   7 #
   8 # This work is licensed under the terms of the GNU GPL, version 2 or
   9 # later.  See the COPYING file in the top-level directory.
  10
  11 from avocado_qemu import LinuxTest
  12
  13
  14 class HotPlugCPU(LinuxTest):
  15
  16     def test(self):
  17         """
  18         :avocado: tags=arch:x86_64
  19         :avocado: tags=machine:q35
  20         :avocado: tags=accel:kvm
  21         """
  22         self.require_accelerator('kvm')
  23         self.vm.add_args('-accel', 'kvm')
  24         self.vm.add_args('-cpu', 'Haswell')
  25         self.vm.add_args('-smp', '1,sockets=1,cores=2,threads=1,maxcpus=2')
  26         self.launch_and_wait()
  27
  28         self.ssh_command('test -e /sys/devices/system/cpu/cpu0')
  29         with self.assertRaises(AssertionError):
  30             self.ssh_command('test -e /sys/devices/system/cpu/cpu1')
  31
  32         self.vm.command('device_add',
  33                         driver='Haswell-x86_64-cpu',
  34                         socket_id=0,
  35                         core_id=1,
  36                         thread_id=0)
  37         self.ssh_command('test -e /sys/devices/system/cpu/cpu1')