Re: [RFC PATCH 02/27] vhost: Add device callback in vhost_migration_log

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On Fri, Nov 20, 2020 at 07:50:40PM +0100, Eugenio Pérez wrote:
> This allows code to reuse the logic to not to re-enable or re-disable
> migration mechanisms. Code works the same way as before.
> 
> Signed-off-by: Eugenio Pérez <eperezma@xxxxxxxxxx>
> ---
>  hw/virtio/vhost.c | 12 +++++++-----
>  1 file changed, 7 insertions(+), 5 deletions(-)
> 
> diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
> index 2bd8cdf893..2adb2718c1 100644
> --- a/hw/virtio/vhost.c
> +++ b/hw/virtio/vhost.c
> @@ -862,7 +862,9 @@ err_features:
>      return r;
>  }
>  
> -static int vhost_migration_log(MemoryListener *listener, bool enable)
> +static int vhost_migration_log(MemoryListener *listener,
> +                               bool enable,
> +                               int (*device_cb)(struct vhost_dev *, bool))

Please document the argument. What is the callback function supposed to
do ("device_cb" is not descriptive so I'm not sure)?

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