update_descriptor 327 arch/x86/include/asm/xen/hypercall.h return _hypercall2(int, update_descriptor, ma, desc); update_descriptor 328 arch/x86/include/asm/xen/hypercall.h return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32); update_descriptor 66 tools/lib/traceevent/plugins/plugin_xen.c N(update_descriptor),