Tested by:Royce Lv<lvroyce@linux.vnet.ibm.com> I'm not sure whether I encountered are env/config related problem or bugs,so I submit my installation process here for you to reference. 1.env description: host os:Ubuntu 11.04(kernel 2.6.38-8-generic,x86_64) libvirt:0.9.6 qemu:0.15.50 dtrace:sun D 1.6 systemtap:version 1.3/0.148 non-git sources 2.install systemtaped libvirt (1)configure ./configure --prefix=/usr --with-dtrace (2)make --->error1: dtrace: failed to compile script probes.d: line 2: invalid control directive: #file: solution: delete lines begin with "#" -->error2: Invoking: ld -o probes.o -r probes.tmp.o /usr/lib/dtrace/drti.o ld: i386 architecture of input file `probes.tmp.o' is incompatible with i386:x86-64 output dtrace: failed to link script probes.d: failed to link probes.o: ld exited with status 1 ????so the script incompatible for 64 system,is it a bug? solution: change "DTRACE=/usr/bin/dtrace" to "DTRACE=/usr/bin/dtrace -64" -->error3:(with ./configure --prefix=/usr --enable-dtrace) *** objects probes.o is not portable! /usr/bin/ld: probes.o: relocation R_X86_64_32 against `.rodata' can not be used when making a shared object; recompile with -fPIC probes.o: could not read symbols: Bad value tried: (1)reconfig with ./configure --with-dtrace --disable-share result: compile success,but libvirt_probes.stp size is 0,stp script can't be used (2)add flags with -fPIC result: nothing changed,still the same error (3)tried configure --with-pic result: nothing changed,still the same error 3.Here is my question: (1)Is the system-enabled libvirt support 64bit system? (2)Do you have suggestion about error3? Sorry to bother you so many times,But I do think applying these patches are important and useful for future debugging.Thank you for your time!