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| author | Wei Wang <wei.w.wang@intel.com> | 2019-01-07 15:01:04 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-01-14 20:15:20 -0500 |
| commit | bf4dc0b2beebfd9338df7c0bcf473b356f67cf66 (patch) | |
| tree | 2f7d09c5a40626a7cac01a49dee42b225d3405ef /block | |
| parent | a229989d975eb926076307c1f2f5e4c6111768e7 (diff) | |
| download | linux-bf4dc0b2beebfd9338df7c0bcf473b356f67cf66.tar.bz2 | |
virtio-balloon: tweak config_changed implementation
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.
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Wei Wang <wei.w.wang@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Halil Pasic <pasic@linux.ibm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 86a559787e6f ("virtio-balloon: VIRTIO_BALLOON_F_FREE_PAGE_HINT")
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions