+ if (npages && !new.lpage_info) {
+ int largepages = npages / KVM_PAGES_PER_HPAGE;
+ if (npages % KVM_PAGES_PER_HPAGE)
+ largepages++;
+ if (base_gfn % KVM_PAGES_PER_HPAGE)
+ largepages++;
+
+ new.lpage_info = vmalloc(largepages * sizeof(*new.lpage_info));
+
+ if (!new.lpage_info)
+ goto out_free;
+
+ memset(new.lpage_info, 0, largepages * sizeof(*new.lpage_info));
+
+ if (base_gfn % KVM_PAGES_PER_HPAGE)
+ new.lpage_info[0].write_count = 1;
+ if ((base_gfn+npages) % KVM_PAGES_PER_HPAGE)
+ new.lpage_info[largepages-1].write_count = 1;
+ }