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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/display/vhost-user-gpu.c
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@ -565,6 +565,12 @@ vhost_user_gpu_device_realize(DeviceState *qdev, Error **errp)
g->vhost_gpu_fd = -1;
}
static struct vhost_dev *vhost_user_gpu_get_vhost(VirtIODevice *vdev)
{
VhostUserGPU *g = VHOST_USER_GPU(vdev);
return &g->vhost->dev;
}
static Property vhost_user_gpu_properties[] = {
VIRTIO_GPU_BASE_PROPERTIES(VhostUserGPU, parent_obj.conf),
DEFINE_PROP_END_OF_LIST(),
@ -586,6 +592,7 @@ vhost_user_gpu_class_init(ObjectClass *klass, void *data)
vdc->guest_notifier_pending = vhost_user_gpu_guest_notifier_pending;
vdc->get_config = vhost_user_gpu_get_config;
vdc->set_config = vhost_user_gpu_set_config;
vdc->get_vhost = vhost_user_gpu_get_vhost;
device_class_set_props(dc, vhost_user_gpu_properties);
}