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Re: [Qemu-devel] [PATCH] hw/s390x: Mark the "sclpquiesce" device with us
From: |
Claudio Imbrenda |
Subject: |
Re: [Qemu-devel] [PATCH] hw/s390x: Mark the "sclpquiesce" device with user_creatable = false |
Date: |
Thu, 5 Oct 2017 12:26:29 +0200 |
On Thu, 5 Oct 2017 10:45:05 +0200
Thomas Huth <address@hidden> wrote:
> The "sclpquiesce" device is just an internal device that should not be
> created by the user directly. Though it currently does not seem to
> cause any obvious trouble when the user instantiates an additional
> device, let's better mark it with user_creatable = false to avoid
> unexpected behavior, e.g. because the quiesce notifier gets
> registered multiple times.
>
> Signed-off-by: Thomas Huth <address@hidden>
Reviewed-by: Claudio Imbrenda <address@hidden>
> ---
> hw/s390x/sclpquiesce.c | 7 ++++++-
> 1 file changed, 6 insertions(+), 1 deletion(-)
>
> diff --git a/hw/s390x/sclpquiesce.c b/hw/s390x/sclpquiesce.c
> index 762cb18..0241643 100644
> --- a/hw/s390x/sclpquiesce.c
> +++ b/hw/s390x/sclpquiesce.c
> @@ -118,8 +118,13 @@ static void quiesce_class_init(ObjectClass
> *klass, void *data) dc->reset = quiesce_reset;
> dc->vmsd = &vmstate_sclpquiesce;
> set_bit(DEVICE_CATEGORY_MISC, dc->categories);
> - k->init = quiesce_init;
> + /*
> + * Reason: This is just an internal device - the notifier should
> + * not be registered multiple times in quiesce_init()
> + */
> + dc->user_creatable = false;
>
> + k->init = quiesce_init;
> k->get_send_mask = send_mask;
> k->get_receive_mask = receive_mask;
> k->can_handle_event = can_handle_event;