On Tue, Jan 08, 2019 at 12:50:03PM +0800, Wei Wang wrote:
> virtio-ccw has deadlock issues with reading the config space inside the
> interrupt context, so we tweak the virtballoon_changed implementation
> by moving the config read operations into the related workqueue contexts.
> The config_read_bitmap is used as a flag to the workqueue callbacks
> about the related config fields that need to be read.
>
> The cmd_id_received is also renamed to cmd_id_received_cache, and
> the value should be obtained via virtio_balloon_cmd_id_received.
>
> Fixes: 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT")
> Reported-by: Christian Borntraeger <[email protected]>
> Signed-off-by: Wei Wang <[email protected]>
> Reviewed-by: Cornelia Huck <[email protected]>
> Reviewed-by: Halil Pasic <[email protected]>
> Tested-by: Christian Borntraeger <[email protected]>
> ---
> drivers/virtio/virtio_balloon.c | 98
> +++++++++++++++++++++++++++--------------
> 1 file changed, 65 insertions(+), 33 deletions(-)
>
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html
for how to do this properly.
</formletter>
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