Hello Maciej, >> [R4600 tlbex.c patch] >> This doesn't seem to be enough. > Well, there can be something else. But to be sure I haven't missed > anything in these TLB handlers, could you please generate the dumps I > mentioned yesterday and send them to me? You need to uncomment the > definition of DEBUG_TLB at the top of arch/mips/mm/tlbex.c for that. I think I found the trick. Just following the hint that the R4600 is similar to the R5000 I added CPU_R4600 to build_tlb_probe_entry(). After that I got a prompt :-). Everything worked fine so far... The next problem appeared on shutdown, where I got a kernel panic (as the R4000 does with the 32-bit kernel, too) - something related too the UART/serial console I suspect. As it's not on serial output I need to find a way to get it without pencil and paper ;). If you have further things to try, just send patches :) Markus