Commit 2f8200ef authored by Jason Wang's avatar Jason Wang Committed by Michael S. Tsirkin
Browse files

vdpa_sim: use weak barriers 



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

Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
Message-Id: <20221221062146.15356-1-jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Acked-by: default avatarEugenio Pérez <eperezma@redhat.com>
parent 07b679f7

drivers/vdpa/vdpa_sim/vdpa_sim.c

+1 −1
Original line number Diff line number Diff line
@@ -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,