Hi all, I add some log like this in QEMU_SRC/hw/i386/pc.c
+++ b/hw/i386/pc.c > > @@ -1364,6 +1364,13 @@ void pc_memory_init(PCMachineState *pcms, > > >> linux_boot = (machine->kernel_filename != NULL); > > >> + /* add for qemu start speed */ > > + time_t rawtime; > > + struct tm * timeinfo; > > + time ( &rawtime ); > > + timeinfo = localtime ( &rawtime ); > > + error_printf_unless_qmp("jpc_memory_init begin -- >> %s\n",asctime(timeinfo)); > > + > > Then I use `QEMU -D /qemu.log ...` command to start a vm, but I have seen nothing in /qemu.log, I don't know why, and how to show my log while starting qemu? Thank you~