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Date: Sat, 10 Oct 2020 09:48:42 +0800 From: Jason Wang <jasowang@...hat.com> To: Si-Wei Liu <si-wei.liu@...cle.com>, mst@...hat.com, lingshan.zhu@...el.com Cc: joao.m.martins@...cle.com, boris.ostrovsky@...cle.com, linux-kernel@...r.kernel.org, virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org Subject: Re: [PATCH v3 1/2] vhost-vdpa: fix vhost_vdpa_map() on error condition On 2020/10/3 下午1:02, Si-Wei Liu wrote: > vhost_vdpa_map() should remove the iotlb entry just added > if the corresponding mapping fails to set up properly. > > Fixes: 4c8cf31885f6 ("vhost: introduce vDPA-based backend") > Signed-off-by: Si-Wei Liu <si-wei.liu@...cle.com> > --- > drivers/vhost/vdpa.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c > index 796fe97..0f27919 100644 > --- a/drivers/vhost/vdpa.c > +++ b/drivers/vhost/vdpa.c > @@ -565,6 +565,9 @@ static int vhost_vdpa_map(struct vhost_vdpa *v, > perm_to_iommu_flags(perm)); > } > > + if (r) > + vhost_iotlb_del_range(dev->iotlb, iova, iova + size - 1); > + > return r; > } > Acked-by: Jason Wang <jasowang@...hat.com>
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