diff mbox series

[RFC,v3,2/5] vhost-iova-tree: Remove range check for IOVA allocator

Message ID 20250110170837.2747532-3-jonah.palmer@oracle.com (mailing list archive)
State New
Headers show
Series Handling aliased guest memory maps in vhost-vDPA SVQs | expand

Commit Message

Jonah Palmer Jan. 10, 2025, 5:08 p.m. UTC 
Removes the range check portion in vhost_iova_tree_map_alloc.

The previous patch decoupled the IOVA allocator from adding mappings to
the IOVA->HVA tree (now a partial SVQ IOVA->HVA tree) and instead adds
the allocated IOVA range to an IOVA-only tree. No value exists under
translated_addr for the IOVA-only mappings, so this check is no longer
needed.

This check was moved to vhost_iova_tree_insert in the previous patch
since that function handles adding IOVA->HVA mappings to the SVQ
IOVA->HVA tree.

Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
---
 hw/virtio/vhost-iova-tree.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/virtio/vhost-iova-tree.c b/hw/virtio/vhost-iova-tree.c
index b1cfd17843..f6a5694857 100644
--- a/hw/virtio/vhost-iova-tree.c
+++ b/hw/virtio/vhost-iova-tree.c
@@ -93,8 +93,7 @@  int vhost_iova_tree_map_alloc(VhostIOVATree *tree, DMAMap *map)
     /* Some vhost devices do not like addr 0. Skip first page */
     hwaddr iova_first = tree->iova_first ?: qemu_real_host_page_size();
 
-    if (map->translated_addr + map->size < map->translated_addr ||
-        map->perm == IOMMU_NONE) {
+    if (map->perm == IOMMU_NONE) {
         return IOVA_ERR_INVALID;
     }