On Mon, Jun 9, 2008 at 1:53 PM, Markus Gothe <markus.gothe@xxxxxx> wrote: > Start with checking the memory mapping as hinted by: > ra : 8000dd10 copy_user_highpage+0x98/0x158 > //Markus Thank you for your advice, I checked this function and found that the problem might be "cpu_has_dc_aliases", After disabling MIPS_CACHE_ALIASES in probe_pcache(), the linux goes on with no oops. Could anyone here provide instructions about fusion MIPS SOC(R3K/R4K for example)? It confused me a lot. :) -- FIXME if it is wrong.