On 11/13/14 00:22, Andrew Fish wrote: > >> On Nov 12, 2014, at 2:26 PM, Jordan Justen <jordan.l.jus...@intel.com> wrote: >> Too bad the DebugAgent isn't actually useful for all the trouble it >> causes. :) > > 1st question what is wrong with the DebugAgent? Why is int not useful?
There's nothing wrong with it, it's just that I never managed to use it without installing windows and WinDbg on a *physical* host. I had performed a very elaborate experiment earlier, setting up two virtual machines (with qemu) in the same host, connecting their emulated serial ports via a unix domain socket, running OVMF in one, and windbg (or the dedicated UDK debugger, can't really recall) in the other -- and the serial handshake with the debug agent never completed. There was some traffic, yes, but the protocol failed to sync up. > 2nd question why are you using the DebugAgent, when you could just use the > QEMU built in gdb stub? I tried that too. First, loading the appropriate symbols in the gdb frontend is very painful. Second, the debugging experience is unstable. In my ad-hoc testing I managed to peek at a few variables and get backtraces, so I thought it was all fine, but the first time I wanted to use it for *real* debugging, the guest running OVMF just died. Debugging OVMF using Linux tools remains a pain. Laszlo ------------------------------------------------------------------------------ Comprehensive Server Monitoring with Site24x7. Monitor 10 servers for $9/Month. Get alerted through email, SMS, voice calls or mobile push notifications. Take corrective actions from your mobile device. http://pubads.g.doubleclick.net/gampad/clk?id=154624111&iu=/4140/ostg.clktrk _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
