Paul, as it looks to be quite non-trivial an operation, did you happen to have to backport commit 480b83162a to 4.4 or older, without backporting all the ioreq server stuff at the same time? It looks to me as if the issue predates the addition of ioreq servers, and us having had customer reports here would seem to make this a candidate fix (perhaps with at least 125833f5f1 ["x86: fix ioreq-server event channel vulnerability"] also backported, which also appears to address a pre-existing issue).
Thanks, Jan _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
