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vdpa_sim: use weak barriers

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vDPA simulators are software emulated device, so let's switch to use
weak barriers to avoid extra overhead in the driver.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221221062146.15356-1-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
This commit is contained in:
Jason Wang 2022-12-21 14:21:46 +08:00 committed by Michael S. Tsirkin
parent 07b679f70d
commit 2f8200efe7
1 changed files with 1 additions and 1 deletions
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2
drivers/vdpa/vdpa_sim/vdpa_sim.c
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@ -68,7 +68,7 @@ static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx)
struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
uint16_t last_avail_idx = vq->vring.last_avail_idx;
vringh_init_iotlb(&vq->vring, vdpasim->features, vq->num, false,
vringh_init_iotlb(&vq->vring, vdpasim->features, vq->num, true,
(struct vring_desc *)(uintptr_t)vq->desc_addr,
(struct vring_avail *)
(uintptr_t)vq->driver_addr,