Re: [RFC PATCH v5 02/23] vdpa: Fix bad index calculus at vhost_vdpa_get_vring_base

[Eugenio Perez Martin]

On Thu, Apr 14, 2022 at 5:34 AM Jason Wang <jasowang@redhat.com> wrote:
>
>
> 在 2022/4/8 21:33, Eugenio Pérez 写道:
> > Fixes: 6d0b222666 ("vdpa: Adapt vhost_vdpa_get_vring_base to SVQ")
> >
> > Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
> > ---
>
>
> Acked-by: Jason Wang <jasowang@redhat.com>
>
> I think we need to use a separate patch for this.
>

Do you mean I should send this patch in a separate series? I can batch
all the fixes for SVQ.

>
> >   hw/virtio/vhost-vdpa.c | 4 ++--
> >   1 file changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
> > index 9e5fe15d03..1f229ff4cb 100644
> > --- a/hw/virtio/vhost-vdpa.c
> > +++ b/hw/virtio/vhost-vdpa.c
> > @@ -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
>