I have never got this to work reliably. Occasionally I can get as far as making a debugger connection at boot-time, IIRC, but have never managed to use the deugger at all. You always seem to end up in some debugger-debuggee deadlock. I suspect that the serial link simulation is imperfect enough (lost interrupts and thus lost characters?) that you are out of luck for serial-link-based remote debugging, even though userland serial comms, e.g. using Hyperterm, seem to work fine. I was able to get debugging working, a year or two ago, under QEMU using the MIN_CYCLE_COUNT patch (I made a command line option called '-mcc' to allow this to be tuned at run-time) but IIRC this patch is irrelevant when KVM is used. Can anyone suggest a KVM patch which might help, even if it slows the debuggee VM down? Pity SoftICE got killed off :-) You could try http://www.sysersoft.com/ for a one-PC Windows kernel debugging solution. Seems to be a small Beijing software house which just sells on-line. Their product is not free, though there is a free trial. (I haven't tried it under KVM, though they advertise that it works under VxWxxx [censored]). -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
