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vdpa: Fix bad index calculus at vhost_vdpa_get_vring_base

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Fixes: 6d0b222666 ("vdpa: Adapt vhost_vdpa_get_vring_base to SVQ")

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20220512175747.142058-4-eperezma@redhat.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 2022-05-12 19:57:44 +02:00 committed by Michael S. Tsirkin
parent 81abfa5724
commit 639036477e
1 changed files with 2 additions and 2 deletions
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4
hw/virtio/vhost-vdpa.c
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@ -1172,11 +1172,11 @@ static int vhost_vdpa_get_vring_base(struct vhost_dev *dev,
struct vhost_vring_state *ring)
{
struct vhost_vdpa *v = dev->opaque;
int vdpa_idx = ring->index - dev->vq_index;
int ret;
if (v->shadow_vqs_enabled) {
VhostShadowVirtqueue *svq = g_ptr_array_index(v->shadow_vqs,
ring->index);
VhostShadowVirtqueue *svq = g_ptr_array_index(v->shadow_vqs, vdpa_idx);
/*
* Setting base as last used idx, so destination will see as available