In article <523aab61.8000...@gmail.com>, Jan Danielsson <jan.m.daniels...@gmail.com> wrote: >On 9/18/13 7:00 PM, Jan Danielsson wrote: >> I'm trying to get kgdb working between two virtual box instances. (I >> have verified that /dev/tty00 <-> /dev/tty00 works by running GENERIC >> kernels and minicom on both virtual machines). >[---] > > Problem #1 "solved" (worked-around). It looks like RB_KDB isn't being >passed over to the kernel properly. I simply commented out "if >(boothowto & RB_KDB)", and how have a kernel which actually waits for a >remote debugger to attach on boot. > > I enabled DEBUG_KGDB, and when I attach the debugger from the >"remote" the target clearly reacts to it. Unfortunately, the "remote" >says "PC register not available" -- and it doesn't appear to actually be >connected. > > Is kgdb supposed to work on amd64 and/or -current? I'm starting to >get the feeling that this is somewhat untested.
I did not test kgdb last time I upgraded gdb, so it might need fixing... christos