+ for (i = 0; i < KVM_ADDRESS_SPACE_NUM; i++) {
+ slots = __kvm_memslots(kvm, i);
+ kvm_for_each_memslot(slot, slots) {
+ unsigned long hva_start, hva_end;
+
+ hva_start = max(range->start, slot->userspace_addr);
+ hva_end = min(range->end, slot->userspace_addr +
+ (slot->npages << PAGE_SHIFT));
+ if (hva_start >= hva_end)
+ continue;
+
+ /*
+ * To optimize for the likely case where the address
+ * range is covered by zero or one memslots, don't
+ * bother making these conditional (to avoid writes on
+ * the second or later invocation of the handler).
+ */
+ gfn_range.pte = range->pte;
+ gfn_range.may_block = range->may_block;
+
+ /*
+ * {gfn(page) | page intersects with [hva_start, hva_end)} =
+ * {gfn_start, gfn_start+1, ..., gfn_end-1}.
+ */
+ gfn_range.start = hva_to_gfn_memslot(hva_start, slot);
+ gfn_range.end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, slot);
+ gfn_range.slot = slot;
+
+ if (!locked) {
+ locked = true;
+ KVM_MMU_LOCK(kvm);
+ }
+ ret |= range->handler(kvm, &gfn_range);
+ }
+ }
+
+ if (range->flush_on_ret && (ret || kvm->tlbs_dirty))