- gnttab_set_unmap_op(&unmap[invcount],
- idx_to_kaddr(mmap_idx, k_idx, i),
- GNTMAP_host_map, khandle->kernel);
- invcount++;
-
- if (create_lookup_pte_addr(
- info->vma->vm_mm,
- MMAP_VADDR(info->user_vstart, u_idx, i),
- &ptep) !=0) {
- WPRINTK("Couldn't get a pte addr!\n");
- return;
+
+ if (khandle->user != 0xFFFF) {
+ if (create_lookup_pte_addr(
+ info->vma->vm_mm,
+ MMAP_VADDR(info->user_vstart, u_idx, i),
+ &ptep) !=0) {
+ WPRINTK("Couldn't get a pte addr!\n");
+ return;
+ }
+
+ gnttab_set_unmap_op(&unmap[invcount], ptep,
+ GNTMAP_host_map |
+ GNTMAP_application_map |
+ GNTMAP_contains_pte,
+ khandle->user);
+ invcount++;