vfio: fix partial unmap

[dpdk.git] / lib / eal / linux / eal_vfio.c

diff --git a/lib/eal/linux/eal_vfio.c b/lib/eal/linux/eal_vfio.c
index 657c89c..aa2087a 100644 (file)
--- a/lib/eal/linux/eal_vfio.c
+++ b/lib/eal/linux/eal_vfio.c
@@ -1943,9 +1943,6 @@ container_dma_unmap(struct vfio_config *vfio_cfg, uint64_t vaddr, uint64_t iova,
         * mappings, let's just rebuild them using information we have.
         */
 
-       /* do we have partial unmap capability? */
-       has_partial_unmap = vfio_cfg->vfio_iommu_type->partial_unmap;
-
        /*
         * first thing to do is check if there exists a mapping that includes
         * the start and the end of our requested unmap. We need to collect all
@@ -1961,6 +1958,9 @@ container_dma_unmap(struct vfio_config *vfio_cfg, uint64_t vaddr, uint64_t iova,
                goto out;
        }
 
+       /* do we have partial unmap capability? */
+       has_partial_unmap = vfio_cfg->vfio_iommu_type->partial_unmap;
+
        /*
         * if we don't support partial unmap, we must check if start and end of
         * current unmap region are chunk-aligned.