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vdpa: request iova_range only once

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Currently iova range is requested once per queue pair in the case of
net. Reduce the number of ioctls asking it once at initialization and
reusing that value for each vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20221215113144.322011-7-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasonwang@redhat.com>
This commit is contained in:
Eugenio Pérez 2022-12-15 12:31:38 +01:00 • committed by Michael S. Tsirkin
parent 36e4647247
commit a585fad26b
2 changed files with 14 additions and 28 deletions
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15
hw/virtio/vhost-vdpa.c
View file

@ -365,19 +365,6 @@ static int vhost_vdpa_add_status(struct vhost_dev *dev, uint8_t status)
return 0;
}
static void vhost_vdpa_get_iova_range(struct vhost_vdpa *v)
{
int ret = vhost_vdpa_call(v->dev, VHOST_VDPA_GET_IOVA_RANGE,
&v->iova_range);
if (ret != 0) {
v->iova_range.first = 0;
v->iova_range.last = UINT64_MAX;
}
trace_vhost_vdpa_get_iova_range(v->dev, v->iova_range.first,
v->iova_range.last);
}
/*
* The use of this function is for requests that only need to be
* applied once. Typically such request occurs at the beginning
@ -465,8 +452,6 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **errp)
goto err;
}
vhost_vdpa_get_iova_range(v);
if (!vhost_vdpa_first_dev(dev)) {
return 0;
}