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virtio: add vhost support for virtio devices

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This patch adds a get_vhost() callback function for VirtIODevices that
returns the device's corresponding vhost_dev structure, if the vhost
device is running. This patch also adds a vhost_started flag for
VirtIODevices.

Previously, a VirtIODevice wouldn't be able to tell if its corresponding
vhost device was active or not.

Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <1648819405-25696-3-git-send-email-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jonah Palmer
2022-04-01 09:23:19 -04:00
committed by Michael S. Tsirkin
parent 3857cd5c7f
commit c255488d67
12 changed files with 76 additions and 1 deletions
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7
hw/input/vhost-user-input.c
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@@ -78,6 +78,12 @@ static void vhost_input_set_config(VirtIODevice *vdev,
virtio_notify_config(vdev);
}
static struct vhost_dev *vhost_input_get_vhost(VirtIODevice *vdev)
{
VHostUserInput *vhi = VHOST_USER_INPUT(vdev);
return &vhi->vhost->dev;
}
static const VMStateDescription vmstate_vhost_input = {
.name = "vhost-user-input",
.unmigratable = 1,
@@ -92,6 +98,7 @@ static void vhost_input_class_init(ObjectClass *klass, void *data)
dc->vmsd = &vmstate_vhost_input;
vdc->get_config = vhost_input_get_config;
vdc->set_config = vhost_input_set_config;
vdc->get_vhost = vhost_input_get_vhost;
vic->realize = vhost_input_realize;
vic->change_active = vhost_input_change_active;
}