> So before spending more time on debugging this, and creating patches > for using HW coherency, I wanted to hear your input - maybe there are > known problems in the Au1500 coherency implementation? Looks like Eric already replied to your questions. Patches to get the code to compile with NONCOHERENT_IO turned off would be good, even if you don't want to do that yet. FYI, in the latest kernel I'm getting a panic when doing a very large 'cp -a' from nfs to ata100 disk (don't know if the disk itself matters) (Pb1500 and Db1500). The same test passes with a 2.4.18 kernel, so it seems like it's not a hardware issue, unless the 2.4.18 kernel is just getting lucky. I'll be gone till 4/20 so I won't have time to debug it until after I get back. Pete
