Re: [PATCH] multi-process: Acceptance test for multiprocess QEMU

[Wainer dos Santos Moschetta <wainersm@redhat.com>]

On 12/23/20 3:44 AM, elena.ufimtseva@oracle.com wrote:
> From: Jagannathan Raman <jag.raman@oracle.com>
>
> Runs the Avocado acceptance test to check if a
> remote lsi53c895a device gets identified by the guest.
>
> Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
> Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
> Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
> ---
>   tests/acceptance/multiprocess.py | 104 +++++++++++++++++++++++++++++++
>   1 file changed, 104 insertions(+)
>   create mode 100644 tests/acceptance/multiprocess.py

The test looks good. Thanks for contributing it!

Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>

>
> diff --git a/tests/acceptance/multiprocess.py b/tests/acceptance/multiprocess.py
> new file mode 100644
> index 0000000000..d10b4d2c05
> --- /dev/null
> +++ b/tests/acceptance/multiprocess.py
> @@ -0,0 +1,104 @@
> +# Test for multiprocess qemu
> +#
> +# 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 avocado_qemu import Test
> +from avocado_qemu import wait_for_console_pattern
> +from avocado_qemu import exec_command_and_wait_for_pattern
> +
> +from qemu.accel import kvm_available
> +
> +import os
> +import socket
> +
> +ACCEL_NOT_AVAILABLE_FMT = "%s accelerator does not seem to be available"
> +KVM_NOT_AVAILABLE = ACCEL_NOT_AVAILABLE_FMT % "KVM"
> +
> +class Multiprocess(Test):
> +    """
> +    :avocado: tags=multiprocess
> +    """
> +    KERNEL_COMMON_COMMAND_LINE = 'printk.time=0 '
> +
> +    def wait_for_console_pattern(self, success_message, vm=None):
> +        wait_for_console_pattern(self, success_message,
> +                                 failure_message='Kernel panic - not syncing',
> +                                 vm=vm)
> +
> +    def do_test(self, kernel_url, initrd_url, kernel_command_line,
> +                machine_type):
> +        if not kvm_available(self.arch, self.qemu_bin):
> +            self.cancel(KVM_NOT_AVAILABLE)
> +
> +        # Create socketpair to connect proxy and remote processes
> +        proxy_sock, remote_sock = socket.socketpair(socket.AF_UNIX,
> +                                                    socket.SOCK_STREAM)
> +        os.set_inheritable(proxy_sock.fileno(), True)
> +        os.set_inheritable(remote_sock.fileno(), True)
> +
> +        kernel_path = self.fetch_asset(kernel_url)
> +        initrd_path = self.fetch_asset(initrd_url)
> +
> +        # Create remote process
> +        remote_vm = self.get_vm()
> +        remote_vm.add_args('-machine', 'x-remote')
> +        remote_vm.add_args('-nodefaults')
> +        remote_vm.add_args('-device', 'lsi53c895a,id=lsi1')
> +        remote_vm.add_args('-object', 'x-remote-object,id=robj1,'
> +                           'devid=lsi1,fd='+str(remote_sock.fileno()))
> +        remote_vm.launch()
> +
> +        # Create proxy process
> +        self.vm.set_console()
> +        self.vm.add_args('-machine', machine_type)
> +        self.vm.add_args('-accel', 'kvm')
> +        self.vm.add_args('-cpu', 'host')
> +        self.vm.add_args("-object",
> +                         "memory-backend-memfd,id=sysmem-file,size=2G")
> +        self.vm.add_args("--numa", "node,memdev=sysmem-file")
> +        self.vm.add_args("-m", "2048")
> +        self.vm.add_args('-kernel', kernel_path,
> +                         '-initrd', initrd_path,
> +                         '-append', kernel_command_line)
> +        self.vm.add_args('-device',
> +                         'x-pci-proxy-dev,'
> +                         'id=lsi1,fd='+str(proxy_sock.fileno()))
> +        self.vm.launch()
> +        self.wait_for_console_pattern("as init process")
> +        exec_command_and_wait_for_pattern(self, "mount -t sysfs sysfs /sys",
> +                                          '', '')
> +        exec_command_and_wait_for_pattern(self,
> +                                          "cat /sys/bus/pci/devices/*/uevent",
> +                                          "PCI_ID=1000:0012", '')
> +
> +    def test_multiprocess_x86_64(self):
> +        """
> +        :avocado: tags=arch:x86_64
> +        """
> +        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
> +                      '/linux/releases/31/Everything/x86_64/os/images'
> +                      '/pxeboot/vmlinuz')
> +        initrd_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
> +                      '/linux/releases/31/Everything/x86_64/os/images'
> +                      '/pxeboot/initrd.img')
> +        kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
> +                               'console=ttyS0 rdinit=/bin/bash')
> +        machine = 'pc'
> +        self.do_test(kernel_url, initrd_url, kernel_command_line, machine)
> +
> +    def test_multiprocess_aarch64(self):
> +        """
> +        :avocado: tags=arch:aarch64
> +        """
> +        kernel_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
> +                      '/linux/releases/31/Everything/aarch64/os/images'
> +                      '/pxeboot/vmlinuz')
> +        initrd_url = ('https://archives.fedoraproject.org/pub/archive/fedora'
> +                      '/linux/releases/31/Everything/aarch64/os/images'
> +                      '/pxeboot/initrd.img')
> +        kernel_command_line = (self.KERNEL_COMMON_COMMAND_LINE +
> +                               'rdinit=/bin/bash console=ttyAMA0')
> +        machine_type = 'virt,gic-version=3'
> +        self.do_test(kernel_url, initrd_url, kernel_command_line, machine_type)