Hello Oda-san, I just noticed this warning message when compiling xen_hyper_command.c with gcc 4.1.1: $ make warn ... cc -c -g -DX86 -D_FILE_OFFSET_BITS=64 xen_hyper_command.c -Wall -Wstrict-prototypes -Wmissing-prototypes xen_hyper_command.c: In function show_xen_hyper_dumpinfo: xen_hyper_command.c:426: warning: value computed is not used ... $ Here is the code it is referring to: 424 addr = (ulong)note_buf + 425 XEN_HYPER_OFFSET(ELF_Prstatus_pr_utime); 426 for (i = 0; i < 4; i++, addr+XEN_HYPER_SIZE(ELF_Timeval)) { I'm presuming that it should be: "addr+=XEN_HYPER_SIZE(ELF_Timeval)? Dave