Hi All, After calling create_bounce_frame , how does the execution return to the next instruction ? I mean the following line: movb $0,TRAPBOUNCE_flags(%edx) I my understanding , the returning path is : create_bounce_frame -> guest os exception handler -> interrupted place It seems that execution will not return to the above line . Maybe I have missed something , can someone point it out for me ? All my discussions assume x86_32. BR yushang _______________________________________________ Xen-devel mailing list Xen-devel@lists.xensource.com http://lists.xensource.com/xen-devel