linux-stable/drivers/s390/virtio
Viktor Prutyanov af8ececda1 virtio: add VIRTIO_F_NOTIFICATION_DATA feature support
According to VirtIO spec v1.2, VIRTIO_F_NOTIFICATION_DATA feature
indicates that the driver passes extra data along with the queue
notifications.

In a split queue case, the extra data is 16-bit available index. In a
packed queue case, the extra data is 1-bit wrap counter and 15-bit
available index.

Add support for this feature for MMIO, channel I/O and modern PCI
transports.

Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20230413081855.36643-2-alvaro.karsz@solid-run.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2023-04-21 03:02:35 -04:00
..
Makefile s390: drivers: Remove redundant license text 2017-11-24 14:28:47 +01:00
virtio_ccw.c virtio: add VIRTIO_F_NOTIFICATION_DATA feature support 2023-04-21 03:02:35 -04:00