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Date:   Thu, 3 Jan 2019 10:26:12 +0100
From:   Cornelia Huck <cohuck@redhat.com>
To:     Wei Wang <wei.w.wang@intel.com>
Cc:     virtio-dev@lists.oasis-open.org, linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org, kvm@vger.kernel.org,
        mst@redhat.com, borntraeger@de.ibm.com, pbonzini@redhat.com,
        dgilbert@redhat.com, pasic@linux.ibm.com
Subject: Re: [PATCH v1 0/2] virtio-balloon: tweak config_changed
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On Thu,  3 Jan 2019 13:31:00 +0800
Wei Wang <wei.w.wang@intel.com> wrote:

> Since virtio-ccw doesn't work with accessing to the config registers
> inside an interrupt context, this patch series avoids that issue by
> moving the config register accesses to the related workqueue contexts.
> 
> Wei Wang (2):
>   virtio-balloon: tweak config_changed implementation
>   virtio-balloon: improve update_balloon_size_func
> 
>  drivers/virtio/virtio_balloon.c | 59 +++++++++++++++++++++--------------------
>  1 file changed, 30 insertions(+), 29 deletions(-)
> 

A quick test (various 'balloon <num>' in the QEMU monitor) with a
virtio-balloon-ccw device seems to work fine here.