Hi Steven, The Xen platform PCI device has a logging feature that is currently implemented using trace_xen_platform_log(s->log_buffer). String arguments may not be supported by all trace backends so they should be avoided. For example, the simple trace backend logs 8-byte arguments and therefore cannot log strings - it will simply log the char * pointer value, not the actual log message. Here is what docs/tracing.txt says:
Pointers (including char *) cannot be dereferenced easily (or at all) in some trace backends. If pointers are used, ensure they are meaningful by themselves and do not assume the data they point to will be traced. Do not pass in string arguments. Is there a better place to send the log output? Stefan
