>>> On 30.01.15 at 14:51, <"jgr...@suse.com".non-mime.internet> wrote: > A request in the ring buffer mustn't be read after it has been marked > as consumed. Otherwise it might already have been reused by the > frontend without violating the ring protocol.
This is irrelevant, as the ->req_cons is a backend private field (if it was a shared one, a barrier would have been needed between copying and updating that field). > To avoid inconsistencies in the backend only work on a private copy > of the request. This will ensure a malicious guest not being able to > bypass consistency checks of the backend by modifying an active > request. Hence - also considering with my earlier reply - I don't view the change as necessary. Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
