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vhost-vdpa: fix vhost_vdpa_map() on error condition

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vhost_vdpa_map() should remove the iotlb entry just added
if the corresponding mapping fails to set up properly.

Fixes: 4c8cf31885 ("vhost: introduce vDPA-based backend")
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Link: https://lore.kernel.org/r/1601701330-16837-2-git-send-email-si-wei.liu@oracle.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Si-Wei Liu 2020-10-03 01:02:09 -04:00 committed by Michael S. Tsirkin
parent ab5122510b
commit 1477c8aebb
1 changed files with 3 additions and 0 deletions
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3
drivers/vhost/vdpa.c
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@ -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;
}