+ return false;
+ }
+
+ /*
+ * Map->iova chunk size is ignored. What to do if descriptor
+ * (addr, size) does not fit is delegated to the device.
+ */
I think we need at least check the size and fail if the size doesn't
match here. Or is it possible that we have a buffer that may cross two
memory regions?
It should be impossible, since both iova_tree and VirtQueue should be
in sync regarding the memory regions updates. If a VirtQueue buffer
crosses many memory regions, iovec has more entries.
I can add a return false, but I'm not able to trigger that situation
even with a malformed driver.