> On 21. Oct 2019, at 02:06, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> wrote: > >> On Sun, 2019-10-20 at 14:04 +0200, Christian Zigotzky wrote: >> >> Thanks a lot for your suggestion! >> >> I had to create a patch because I wasn't able to select >> "CONFIG_NOT_COHERENT_CACHE" in the kernel configuration (patch attached). >> >> After patching I was able to select "CONFIG_NOT_COHERENT_CACHE" in the >> kernel config. I compiled a new RC3 of kernel 5.4 with this kernel >> config option yesterday. >> >> The good news is, that the onboard SD card works! We successfully tested >> it on two AmigaOnes (X5000/20 and X5000/40) yesterday but we need a new >> patch >> because of the possibility to select "CONFIG_NOT_COHERENT_CACHE" in the >> kernel config > > What I find weird is why would it be non-coherent ? A system based on a > E500 should be coherent afaik... > > Cheers, > Ben. > Hi Ben, I think it isn’t good to use the kernel config option "CONFIG_NOT_COHERENT_CACHE" if the system is coherent, is it? We tested the kernel with "CONFIG_NOT_COHERENT_CACHE" yesterday but we didn’t find any differences to the coherent kernel. Could you please explain us the difference between the coherent and not coherent kernel? Thanks, Christian
