qemu-2.0.2 for consistent distributed snapshot

  • Marcel Apfelbaum's avatar
    hmp: fix regression of HMP device_del auto-completion · 4cae4d5a
    Marcel Apfelbaum authored
    The commits:
     - 6a1fa9f5 (monitor: add del completion for peripheral device)
     - 66e56b13 (qdev: add qdev_build_hotpluggable_device_list helper)
    
    cause a QEMU crash when trying to use HMP device_del auto-completion.
    It can be easily reproduced by:
        <qemu-bin> -enable-kvm  ~/images/fedora.qcow2 -monitor stdio -device virtio-net-pci,id=vnet
    
        (qemu) device_del
        /home/mapfelba/git/upstream/qemu/hw/core/qdev.c:941:qdev_build_hotpluggable_device_list: Object 0x7f6ce04e4fe0 is not an instance of type device
        Aborted (core dumped)
    
    The root cause is qdev_build_hotpluggable_device_list going recursively over
    all peripherals and their children assuming all are devices. It doesn't work
    since PCI devices have at least on child which is a memory region (bus master).
    
    Solved by observing that all devices appear as direct children of
    /machine/peripheral container. No need of going recursively
    over all the children.
    Signed-off-by: default avatarMarcel Apfelbaum <marcel.a@redhat.com>
    Reported-by: default avatarGal Hammer <ghammer@redhat.com>
    Reviewed-by: default avatarIgor Mammedov <imammedo@redhat.com>
    Message-id: 1417002601-20799-1-git-send-email-marcel.a@redhat.com
    Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
    4cae4d5a
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