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SubjectRe: [PATCH v3 1/2] vhost-vdpa: fix vhost_vdpa_map() on error condition
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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>


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