diff options
| author | Jason Wang <jasowang@redhat.com> | 2013-01-30 19:12:35 +0800 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-02-01 11:03:02 -0600 |
| commit | a9f98bb5ebe6fb1869321dcc58e72041ae626ad8 (patch) | |
| tree | fe66f183e45763207d12f5298fb8d8d9e3911228 /hw/vhost.h | |
| parent | 264986e2c8f14a0f4a32ac6f1e083905833a5fc7 (diff) | |
| download | qemu-a9f98bb5ebe6fb1869321dcc58e72041ae626ad8.tar.gz | |
vhost: multiqueue support
This patch lets vhost support multiqueue. The idea is simple, just launching
multiple threads of vhost and let each of vhost thread processing a subset of
the virtqueues of the device. After this change each emulated device can have
multiple vhost threads as its backend.
To do this, a virtqueue index were introduced to record to first virtqueue that
will be handled by this vhost_net device. Based on this and nvqs, vhost could
calculate its relative index to setup vhost_net device.
Since we may have many vhost/net devices for a virtio-net device. The setting of
guest notifiers were moved out of the starting/stopping of a specific vhost
thread. The vhost_net_{start|stop}() were renamed to
vhost_net_{start|stop}_one(), and a new vhost_net_{start|stop}() were introduced
to configure the guest notifiers and start/stop all vhost/vhost_net devices.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/vhost.h')
| -rw-r--r-- | hw/vhost.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/vhost.h b/hw/vhost.h index 44c61a5877..f062d48807 100644 --- a/hw/vhost.h +++ b/hw/vhost.h @@ -35,6 +35,8 @@ struct vhost_dev { MemoryRegionSection *mem_sections; struct vhost_virtqueue *vqs; int nvqs; + /* the first virtuque which would be used by this vhost dev */ + int vq_index; unsigned long long features; unsigned long long acked_features; unsigned long long backend_features; |