qemu/hw/virtio
Bin Wu a3614c65cf hw/virtio/vring/event_idx: fix the vring_avail_event error
The event idx in virtio is an effective way to reduce the number of
interrupts and exits of the guest. When the guest puts an request
into the virtio ring, it doesn't exit immediately to inform the
backend. Instead, the guest checks the "avail" event idx to determine
the notification.

In virtqueue_pop, when a request is poped, the current avail event
idx should be set to the number of vq->last_avail_idx.

Signed-off-by: Bin Wu <wu.wubin@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-11-02 13:44:12 +02:00
..
dataplane hw/virtio/vring/event_idx: fix the vring_avail_event error 2014-11-02 13:44:12 +02:00
Makefile.objs block: Always compile virtio-blk dataplane 2014-09-22 11:39:51 +01:00
vhost-backend.c virtio: Move extern declaration to header file 2014-08-09 00:06:32 +04:00
vhost-user.c vhost-user: minor cleanups 2014-07-18 02:22:24 +03:00
vhost.c vhost_net: start/stop guest notifiers properly 2014-09-03 16:40:44 +03:00
virtio-balloon.c virtio-balloon: Tweak recent fix for integer overflow 2014-10-23 09:01:29 -04:00
virtio-bus.c
virtio-mmio.c virtio-mmio: Drop useless bus->allow_hotplug = 0 2014-10-15 05:03:13 +02:00
virtio-pci.c virtio-pci: fix migration for pci bus master 2014-11-02 12:03:03 +02:00
virtio-pci.h virtio-pci: fix migration for pci bus master 2014-11-02 12:03:03 +02:00
virtio-rng.c virtio-rng: add some trace events 2014-08-12 14:29:55 +01:00
virtio.c hw/virtio/vring/event_idx: fix the vring_avail_event error 2014-11-02 13:44:12 +02:00