Hello Markus, > 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(). Well, they are not meant to be errata-compatible. ;-) I haven't been able to locate any reference for tlbp being problematic on the R4600, in particular not in the chip errata document, and the old handlers used to have a nop before that instruction unconditionally (perhaps just in case ;-) ), so the problem was covered. If it fixes the problem for you, then it should probably be applied, too. Not sure about the R4700 -- it fixed a few problems that were there in the R4600 as a side effect, so perhaps we should wait for some report first. Maciej
