> -----Original Message----- > From: Jan Beulich [mailto:jbeul...@suse.com] > Sent: 29 April 2016 09:14 > To: xen-devel > Cc: Paul Durrant; Wei Liu; Tim (Xen.org) > Subject: [PATCH] x86/shadow: account for ioreq server pages before > complaining about not found mapping > > prepare_ring_for_helper(), just like share_xen_page_with_guest(), > takes a write reference on the page, and hence should similarly be > accounted for when determining whether to log a complaint. > > This requires using recursive locking for the ioreq server lock, as the > offending invocation of sh_remove_all_mappings() is down the call stack > from hvm_set_ioreq_server_state(). (While not strictly needed to be > done in all other instances too, convert all of them for consistency.)
Do you have an example of a call stack? Is the recursion due to the domain_pause() being done with the ioreq server spinlock held? Paul _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
