Can not get the trace of a specific process when using symbolic trace

[vancaho]

Hi, I install panda v1.0 recently and want to use symbolic-trace to analysis a trace of specific process. After recording with panda, I use the following command line to get the trace:

echo "begin_replay " | ~/qemu/i386-softmmu/qemu-system-i386 -panda-plugin ~/qemu/i386-softmmu/panda_plugins/panda_llvm_trace.so -panda-arg llvm_trace:cr3=0xDEADBEEF -monitor stdio ~/win7.1.qcows2

However, after I read the source code of the llvm_trace, I can not find any codes that use the cr3 value? So which version of the panda should I use?