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Date: Wed, 16 Aug 2017 14:33:30 +0200
From: Cornelia Huck <cohuck@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] hw/s390x/ipl: The s390-ipl device is not
 hot-pluggable
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To: Thomas Huth <thuth@redhat.com>
Cc: qemu-devel@nongnu.org, Christian Borntraeger <borntraeger@de.ibm.com>

On Wed, 16 Aug 2017 07:30:58 +0200
Thomas Huth <thuth@redhat.com> wrote:

> The s390-ipl device can not be created by the user, since it is meant only
> to  be instantiated once internally to load the ROMs and kernel. If the user
> tries to do a "device_add s390-ipl" via the monitor later, QEMU aborts with
> a "ROM images must be loaded at startup" error message.
> 
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  hw/s390x/ipl.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c
> index cc36003..0d06fc1 100644
> --- a/hw/s390x/ipl.c
> +++ b/hw/s390x/ipl.c
> @@ -442,6 +442,8 @@ static void s390_ipl_class_init(ObjectClass *klass, void *data)
>      dc->reset = s390_ipl_reset;
>      dc->vmsd = &vmstate_ipl;
>      set_bit(DEVICE_CATEGORY_MISC, dc->categories);
> +    /* Reason: Loads the ROMs and thus can only be used one time - internally */
> +    dc->user_creatable = false;
>  }
>  
>  static const TypeInfo s390_ipl_info = {

Thanks, applied.