diff --git a/src/intel/vulkan/bvh/anv_bvh.h b/src/intel/vulkan/bvh/anv_bvh.h
index 2ba5c371ba5..c4efeac5b6e 100644
--- a/src/intel/vulkan/bvh/anv_bvh.h
+++ b/src/intel/vulkan/bvh/anv_bvh.h
@@ -252,7 +252,12 @@ struct instance_leaf_part0 {
 };
 
 struct instance_leaf_part1 {
-   /* 48-bits pointer to BVH where start node belongs too */
+   /* 48-bits pointer to BVH where start node belongs to.
+    * Note that this software-defined bvh_ptr has to be in canonical form for
+    * copy.comp to dereference, which means we have to preserve the upper 16
+    * bits. For example, sparse buffer's heaps are located high, so its 63:48
+    * are set to 1.
+    */
    uint64_t bvh_ptr;
 
    /* The instanceCustomIndex in VkAccelerationStructureInstanceKHR */
diff --git a/src/intel/vulkan/bvh/copy.comp b/src/intel/vulkan/bvh/copy.comp
index 070eee3307e..65856b3e85d 100644
--- a/src/intel/vulkan/bvh/copy.comp
+++ b/src/intel/vulkan/bvh/copy.comp
@@ -126,14 +126,14 @@ main(void)
             /* Indirectly access the anv_instance_leaf, and store the blas_ptrs after ser_header */
             uint64_t instance_leaf_addr = DEREF(REF(uint64_t)(copy_src_addr + offset));
             REF(anv_instance_leaf) instance_leaf = REF(anv_instance_leaf)(instance_leaf_addr);
-            uint64_t blas_ptr = DEREF(instance_leaf).part1.bvh_ptr & 0xfffffffffffful;
+            uint64_t blas_ptr = DEREF(instance_leaf).part1.bvh_ptr;
             DEREF(INDEX(uint64_t, instance_base, idx)) = blas_ptr;
          } else { /* ANV_COPY_MODE_DESERIALIZE */
             /* Indirectly access the anv_instance_leaf, and replace the bvh_ptr with the ones after ser_header */
             uint64_t instance_leaf_addr = DEREF(REF(uint64_t)(copy_dst_addr + offset));
             REF(anv_instance_leaf) instance_leaf = REF(anv_instance_leaf)(instance_leaf_addr);
             uint64_t blas_ptr = DEREF(INDEX(uint64_t, instance_base, idx));
-            DEREF(instance_leaf).part1.bvh_ptr = (blas_ptr & 0xfffffffffffful);
+            DEREF(instance_leaf).part1.bvh_ptr = blas_ptr;
 
             /* set the startNodePtr to blas_ptr + ANV_HEADER_SIZE */
             uint64_t mask = 0x0000fffffffffffful;