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vdpa: add listener_registered

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Check if the listener has been registered or not, so it needs to be
registered again at start.

Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <20250522145839.59974-5-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:
Eugenio Pérez 2025-05-22 10:58:36 -04:00 • committed by Michael S. Tsirkin
parent 32f0c7ce4c
commit be2e5fbefa
2 changed files with 12 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

7
hw/virtio/vhost-vdpa.c
View file

@ -1379,7 +1379,10 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started)
"IOMMU and try again");
return -1;
}
memory_listener_register(&v->shared->listener, dev->vdev->dma_as);
if (!v->shared->listener_registered) {
memory_listener_register(&v->shared->listener, dev->vdev->dma_as);
v->shared->listener_registered = true;
}
return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK);
}
@ -1399,6 +1402,8 @@ static void vhost_vdpa_reset_status(struct vhost_dev *dev)
vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE |
VIRTIO_CONFIG_S_DRIVER);
memory_listener_unregister(&v->shared->listener);
v->shared->listener_registered = false;
}
static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base,

6
include/hw/virtio/vhost-vdpa.h
View file

@ -51,6 +51,12 @@ typedef struct vhost_vdpa_shared {
bool iotlb_batch_begin_sent;
/*
* The memory listener has been registered, so DMA maps have been sent to
* the device.
*/
bool listener_registered;
/* Vdpa must send shadow addresses as IOTLB key for data queues, not GPA */
bool shadow_data;