[PATCH v3 0/3] virtio-balloon: tweak config_changed
From: Wei Wang
Date: Mon Jan 07 2019 - 02:36:10 EST
Since virtio-ccw doesn't work with accessing to the config space
inside an interrupt context, this patch series avoids that issue by
moving the config register accesses to the related workqueue contexts.
- rename cmd_id_received to cmd_id_received_cache, and have call sites
read the latest value via virtio_balloon_cmd_id_received. (Still
kept Cornelia and Halil's reviewed-by as it's a minor change)
- remove zeroing vb->num_free_page_blocks in probe since vb is
allocated via kzalloc.
- add config_read_bitmap to indicate to the workqueue callbacks about
the necessity of reading the related config fields.
Wei Wang (3):
virtio-balloon: tweak config_changed implementation
virtio-balloon: improve update_balloon_size_func
virtio_balloon: remove the unnecessary 0-initialization
drivers/virtio/virtio_balloon.c | 104 ++++++++++++++++++++++++++--------------
1 file changed, 69 insertions(+), 35 deletions(-)