> Only weird problem is when I do fshalt -r. My pi2 goes unstable with panics > on reboot. Cold reset brings it back to normal.
Sorry, I have seen this failure too, but only on pi3. If you run with *ncpu=1 the soft reboot seems to work reliably. But my scheme for rebooting from multicore state is clearly not right. Unfortunately I don't know of any way of forcing an arm reset after loading the new kernel without also resetting the gpu back to the load-from-sdcard point. I'll welcome any suggestions for a way to do this. I think linux on the pi supports kexec, so it might be possible to reverse engineer from that and find a way that works. On the other hand, if you search the web for "raspbian kexec" most of the hits seem to be of the "doesn't work" variety, so maybe not. > Does your latest code work on Pi zero? I don't yet have one to test it. Yes it does. If you boot different kernels from the same sdcard you need to use [pi0] as a section header for the zero. (Discovered by trial and error because this doesn't seem to be documented anywhere.)