| Message ID | 1601701330-16837-2-git-send-email-si-wei.liu@oracle.com |
|---|---|
| State | Not Applicable |
| Delegated to: | David Miller |
| Headers | show |
| Series | vhost-vdpa mapping error path fixes | expand |
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@oracle.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@redhat.com>
On Sat, Oct 10, 2020 at 09:48:42AM +0800, Jason Wang wrote: > > 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@oracle.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@redhat.com> Linus already merged this, I can't add your ack, sorry!
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; }
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@oracle.com> --- drivers/vhost/vdpa.c | 3 +++ 1 file changed, 3 insertions(+)