| #!/usr/bin/env python3 |
| # |
| # Functional test that hotplugs a CPU and checks it on a Linux guest |
| # |
| # Copyright (c) 2021 Red Hat, Inc. |
| # |
| # Author: |
| # Cleber Rosa <crosa@redhat.com> |
| # |
| # This work is licensed under the terms of the GNU GPL, version 2 or |
| # later. See the COPYING file in the top-level directory. |
| |
| from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern |
| |
| |
| class HotPlugCPU(LinuxKernelTest): |
| |
| ASSET_KERNEL = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/vmlinuz'), |
| 'd4738d03dbbe083ca610d0821d0a8f1488bebbdccef54ce33e3adb35fda00129') |
| |
| ASSET_INITRD = Asset( |
| ('https://archives.fedoraproject.org/pub/archive/fedora/linux/releases' |
| '/31/Server/x86_64/os/images/pxeboot/initrd.img'), |
| '277cd6c7adf77c7e63d73bbb2cded8ef9e2d3a2f100000e92ff1f8396513cd8b') |
| |
| def test_hotplug(self): |
| |
| self.require_accelerator('kvm') |
| self.vm.add_args('-accel', 'kvm') |
| self.vm.add_args('-cpu', 'Haswell') |
| self.vm.add_args('-smp', '1,sockets=1,cores=2,threads=1,maxcpus=2') |
| self.vm.add_args('-m', '1G') |
| self.vm.add_args('-append', 'console=ttyS0 rd.rescue') |
| |
| self.launch_kernel(self.ASSET_KERNEL.fetch(), |
| self.ASSET_INITRD.fetch(), |
| wait_for='Entering emergency mode.') |
| prompt = '# ' |
| self.wait_for_console_pattern(prompt) |
| |
| exec_command_and_wait_for_pattern(self, |
| 'cd /sys/devices/system/cpu/cpu0', |
| 'cpu0#') |
| exec_command_and_wait_for_pattern(self, |
| 'cd /sys/devices/system/cpu/cpu1', |
| 'No such file or directory') |
| |
| self.vm.cmd('device_add', |
| driver='Haswell-x86_64-cpu', |
| id='c1', |
| socket_id=0, |
| core_id=1, |
| thread_id=0) |
| self.wait_for_console_pattern('CPU1 has been hot-added') |
| |
| exec_command_and_wait_for_pattern(self, |
| 'cd /sys/devices/system/cpu/cpu1', |
| 'cpu1#') |
| |
| exec_command_and_wait_for_pattern(self, 'cd ..', prompt) |
| self.vm.cmd('device_del', id='c1') |
| |
| exec_command_and_wait_for_pattern(self, |
| 'while cd /sys/devices/system/cpu/cpu1 ;' |
| ' do sleep 0.2 ; done', |
| 'No such file or directory') |
| |
| if __name__ == '__main__': |
| LinuxKernelTest.main() |
