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Re: [Qemu-devel] [PATCH 1/9] virtio-dataplane: pass assign=true to virti

From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH 1/9] virtio-dataplane: pass assign=true to virtio_queue_aio_set_host_notifier_handler
Date: Wed, 30 Mar 2016 15:30:04 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0

On 30/03/2016 15:23, Cornelia Huck wrote:
> > There is no need to run the handler one last time; the device is being
> > reset and it is okay to drop requests that are pending in the virtqueue.
> What about virtio_blk_save()? Could there be any pending requests in
> that case?

Those would be processed when dataplane is restarted on the destination
side, I think.  virtio_queue_set_host_notifier_fd_handler calls
virtio_queue_host_notifier_read which connects the host notifier to the
I/O thread and calls event_notifier_set to start processing it.


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