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https://github.com/Motorhead1991/qemu.git
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374a245573
Add a functional test, aarch64_hotplug_pci, to exercise PCI hotplug and hot-unplug on arm64. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Acked-by: Thomas Huth <thuth@redhat.com> Message-ID: <20250528203137.1654964-1-gustavo.romero@linaro.org> [AJB: trimmed boilerplate for checkpatch, simplified invocations] Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-ID: <20250627112512.1880708-3-alex.bennee@linaro.org>
72 lines
2.6 KiB
Python
Executable file
72 lines
2.6 KiB
Python
Executable file
#!/usr/bin/env python3
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#
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# The test hotplugs a PCI device and checks it on a Linux guest.
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#
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# Copyright (c) 2025 Linaro Ltd.
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#
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# Author:
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# Gustavo Romero <gustavo.romero@linaro.org>
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#
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# SPDX-License-Identifier: GPL-2.0-or-later
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from qemu_test import LinuxKernelTest, Asset, exec_command_and_wait_for_pattern
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from qemu_test import BUILD_DIR
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class HotplugPCI(LinuxKernelTest):
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ASSET_KERNEL = Asset(
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('https://ftp.debian.org/debian/dists/stable/main/installer-arm64/'
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'20230607+deb12u11/images/netboot/debian-installer/arm64/linux'),
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'd92a60392ce1e379ca198a1a820899f8f0d39a62d047c41ab79492f81541a9d9')
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ASSET_INITRD = Asset(
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('https://ftp.debian.org/debian/dists/stable/main/installer-arm64/'
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'20230607+deb12u11/images/netboot/debian-installer/arm64/initrd.gz'),
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'9f817f76951f3237bca8216bee35267bfb826815687f4b2fcdd5e6c2a917790c')
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def test_hotplug_pci(self):
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self.set_machine('virt')
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self.vm.add_args('-m', '512M',
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'-cpu', 'cortex-a57',
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'-append',
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'console=ttyAMA0,115200 init=/bin/sh',
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'-device',
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'pcie-root-port,bus=pcie.0,chassis=1,slot=1,id=pcie.1',
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'-bios',
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self.build_file('pc-bios', 'edk2-aarch64-code.fd'))
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# BusyBox prompt
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prompt = "~ #"
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self.launch_kernel(self.ASSET_KERNEL.fetch(),
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self.ASSET_INITRD.fetch(),
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wait_for=prompt)
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# Check for initial state: 2 network adapters, lo and enp0s1.
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exec_command_and_wait_for_pattern(self,
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'ls /sys/class/net | wc -l',
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'2')
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# Hotplug one network adapter to the root port, i.e. pcie.1 bus.
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self.vm.cmd('device_add',
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driver='virtio-net-pci',
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bus='pcie.1',
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addr=0,
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id='na')
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# Wait for the kernel to recognize the new device.
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self.wait_for_console_pattern('virtio-pci')
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self.wait_for_console_pattern('virtio_net')
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# Check if there is a new network adapter.
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exec_command_and_wait_for_pattern(self,
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'ls /sys/class/net | wc -l',
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'3')
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self.vm.cmd('device_del', id='na')
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exec_command_and_wait_for_pattern(self,
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'ls /sys/class/net | wc -l',
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'2')
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if __name__ == '__main__':
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LinuxKernelTest.main()
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